Many modern cars have the ability to independently read electrical system problems. Error codes on Kalina, after decoding, can reduce the time required to find a faulty unit in the electrical wiring.
Self-diagnosis codes
Airbag errors
Errors of light, mirrors and others
Video “Diagnostics of errors on VAZ Kalina”
Comments and Reviews
Vehicle diagnostics and troubleshooting
If you nevertheless decide to buy a used car, then you should definitely make a diagnosis, paying attention to any Lada error codes that appear on the device display. Information about existing errors will be very useful, be sure to pay special attention to this. To diagnose and find out information, you should contact a car service center if there is no special insert on the used car you are buying.
In fact, such a procedure is a huge list of information that can tell about any possible danger. Usually this is not given importance, but in vain. For example, if a car’s BC states that the airbags are faulty, you definitely need to check this. Correction: what needs to be done? Immediately press the left button and the right one, from this press the on-board computer adjusts the selected parameter.
Diagnostics using third-party equipment
More precisely, errors on Chevy Niva can be identified by connecting additional equipment. The technique is more technically complex, but allows us to determine the cause of a breakdown or failure with minimal error. In this case, the sequence of actions is as follows:
If all actions are performed correctly, all available information and any errors in the form of encrypted codes will be displayed in the desktop window.
There are also specialized scanners designed specifically for Chevrolet NIVA. Dealer devices are connected to the place of the standard signaling unit through an output cable.
Separately, we should highlight modern devices designed to connect a smartphone to a car, while reading encodings and controlling operating modes occurs directly from the gadget’s display.
At the same time, you should know what the encodings displayed during diagnostics mean. The code consists of several elements.
The next element is a single digit:
The following digit determines the exact serial number of the line in which the defect was detected:
Posts 6
1 Topic by rybozavr 2015-04-03 15:13:11
Topic: Problems with starting the engine when cold (p1514)
Hello. Recently I started having problems starting the engine when cold. It was possible to start it only with a boost of gas. At the same time, at idle the car has low revs and floats. After warming up the engine there were no problems with starting and speed. Let it sit, cool down, and do the same thing again. The check didn't light up at first. Yesterday it caught fire. It gave errors 0300, 0301 and 0507. Replaced the IAC with a new one. It seems that the revolutions have stopped floating, they stay around 900. But the errors have not disappeared, plus a new one has been added - p1514 - Open circuit of the idle air regulator control circuit. I don't know what to think next.
2 Reply from iAllexx 2015-04-03 17:35:47
Re: problems with starting the engine when cold (p1514)
3 Reply from Sergey VAZ 2111 2015-04-03 22:43:27
Re: problems with starting the engine when cold (p1514)
Four sensors regulate the engine—oxygen sensor—air flow sensor—idle speed sensor—throttle sensor. take a look yourself
Added: 2015-04-03 23:43:27
Four sensors regulate the engine—oxygen sensor—air flow sensor—idle speed sensor—throttle sensor. take a look yourself
By the way, ignition and quality of gasoline. apart from good compression
4 Reply from 7491cm3x 2015-04-04 05:41:56
Re: problems with starting the engine when cold (p1514)
The errors are not related to each other. Conclusion - most likely there is a problem with the wiring somewhere. I think it's worth checking from the ECU.
5 Reply from rybozavr 2015-04-06 09:19:58 (2015-04-06 09:13:19 edited by rybozavr)
Re: problems with starting the engine when cold (p1514)
The errors are not related to each other. Conclusion - most likely there is a problem with the wiring somewhere. I think it's worth checking from the ECU.
The wiring to the sensor was rung. There seems to be no problem with her.
It will be useful: A guide to diagnosing, correct firmware and do-it-yourself flashing of a VAZ computer
Added: 2015-04-06 10:12:55
Four sensors regulate the engine—oxygen sensor—air flow sensor—idle speed sensor—throttle sensor. take a look yourself
Added: 2015-04-03 23:43:27
Another crankshaft position sensor. Worth new.
Four sensors regulate the engine—oxygen sensor—air flow sensor—idle speed sensor—throttle sensor. take a look yourself
By the way, ignition and quality of gasoline. apart from good compression
Regarding the quality of gasoline, I always fill up only at TNK and Lukoil. Usually at TNCs. The only thing is that I read somewhere that if the gas was at its limit, then the gas pump could pump up all sorts of debris from the bottom and clog the injectors. I recently had an almost empty tank.
Added: 2015-04-06 10:19:58
After replacing the IAC sensor, the current situation is this: on Friday evening I was already getting ready to go to the service center, then home to the region (50 km). But I discovered that the revolutions stayed at 900 and did not fluctuate. I decided to wait a while with the service. I went home. While driving the check went out. I arrived home and it caught fire again. The idle speed is increased again. I tried to reset the errors - it still doesn’t light up. The revolutions when cold are around 1300. After warming up - about 900.
Another question - before I had problems with idle, the check light came on regarding the catalytic converter. It seems like the lambda probe is faulty. Or the catalytic converter is broken. I've given up on the problem for now. I went like this. After some time the check went out. Could a faulty lambda probe somehow affect the speed?
Troubleshooting P1514.
To identify the causes of the malfunction, it is necessary to disconnect the block from the idle air regulator and use a multimeter to check the resistance of its windings. The value of the measured resistance between terminals A - B and C - D should be within 40 - 80 Ohms. If the resistance is not normal, the faulty idle air control valve should be replaced.
If the regulator is working properly, use a multimeter in voltmeter mode to check the presence of voltage at the terminals of the block relative to ground when the ignition is on. If the voltage value on all contacts is in the range of 4 - 6V, then there is a weak contact in the connection of the block to the idle speed regulator.
If the voltage is equal to or close to the on-board voltage, then it is necessary to eliminate the short circuit of the wires to the positive wire. To do this, you need to inspect the wiring, paying special attention to areas of melting and abrasion. The most likely place is near the exhaust manifold.
If there is no voltage on at least one contact, turn off the ignition and disconnect the harness block from the controller. Using a multimeter in ohmmeter mode, check the resistance between the terminal at which the voltage does not correspond to the range of 4 - 6V and the corresponding terminal of the controller block. If the wire resistance is more than 1 Ohm, then it is necessary to find and eliminate the break in it. Otherwise, the controller is faulty.
Source
Self-diagnosis of the Kalina/Priora instrument cluster
Decoding error codes in the dashboard:
How to reset errors on Kalina? You can reset the errors yourself using the on-board computer, or contact a service station with special diagnostic equipment.
Let us remind you that you can find detailed photo reports in the Lada Kalina repair category.
Keywords: instrument panel Lada Kalina | dashboard of Lada Priora | on-board computer Lada Kalina | on-board computer Lada Priora | Lada Kalina engine | Lada Priora engine | ECM Lada Kalina | ECM Lada Priora
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How to resolve error P1514
The method for eliminating error P1514 depends on the reason that led to its appearance. In general, the following options are possible:
An interesting fact is noted for modern VAZs with firmware “January-7.2” (this could be “Kalina”, “Granta” or another Lada). On numerous forums, their owners note that error P1514 “falls out” for them just like that, due to a “glitch” of the control unit, and in fact, the IAC and its wiring have nothing to do with it. This problem can be resolved by flashing the ECU. Car owners recommend HL52, FL52 or DZ36. However, remember that, firstly, you need to reflash the control unit in a good, trusted car service center, and secondly, even if such firmware is available, it still makes sense to check the regulator and its wiring. However, in this case, you need to start repairs not by flashing the firmware, but simply by resetting the error. This can be done programmatically or simply by disconnecting the negative terminal on the battery for a few seconds.
Sometimes, as a preventive measure, it is recommended to check the MAF ADC. It also makes sense to clean the internal contacts of the main and fuel relays. As a last resort, replace them (if they are significantly worn and/or burnt). For VAZ cars, it is preferable to use a throttle position sensor (TPS), manufactured in Kaluga. If possible, replace with one.
Some car owners experience error P1514 because they fill the gas tank with fuel with a lower octane number than prescribed by the car manufacturer. This is explained by the fact that either in the regulator itself or in its wiring there is some kind of minor damage, which under normal conditions does not show itself. However, when pouring low-octane gasoline, the engine begins to vibrate more, which is why hidden “diseases” may appear. This usually results in broken insulation or electrical contacts somewhere in the circuit.
Please note that when P1514 occurs, the engine control module no longer controls the idle speed control. However, after it is eliminated, IAC control resumes immediately after turning off/on the ignition system.
Reasons for the error
There are several reasons that could be the source of error P1514. Among them:
Idle speed control
- Complete or partial failure of the idle air regulator. This is usually expressed in a violation of the insulation of its windings (a change in the value of electrical resistance). It is also possible that it may be physically contaminated, or its seat or electrical contacts may be contaminated. If the regulator is old, then physical wear of its individual elements or an increase in play is possible.
- Damage to the IAC control circuit. This could be a break in the individual wire(s) or damage to the insulation.
- Poor electrical contact in the IAC control circuit. There may be oxidation on the contacts, damage to the so-called “chip”, dirt on the contacts, and so on.
- Throttle valve not fully closed or throttle pipe clogged.
- Clogged upper tube of the crankcase ventilation system.
- The so-called “glitch” of some ECU firmware. This is especially true for domestic Lada cars with firmware “January-7.2”.
Each individual reason for the formation of code P1514 is eliminated in its own way. Usually the work is not difficult, but quite labor-intensive.
Decoding combinations
Errors read on the standard panel of the on-board computer can be deciphered using the table. It is useful to print out such information and carry it with you in the glove box, since breakdown of car sensors can happen on the road. Many problems can be corrected only during repair work in a car service center. Knowledge of the decoding will allow the owner to control the process of repairing his car.
Self-diagnosis codes
When diagnosing, you can read the fault codes listed in the table from the instrument panel. Please note that several errors may be displayed simultaneously during the verification process.
Below is a complete list of self-diagnosis errors.
| Code on screen | Decoding |
| 2 | Excess voltage in the on-board electrical network |
| 3 | No signal in the circuit from the fuel level sensor |
| 4 | No signal from the internal combustion engine temperature sensor |
| 5 | The signal from the sensor measuring the air temperature outside the car is not detected |
| 6 | Raising the engine temperature above the permissible level |
| 7 | Critically low oil pressure in the engine lubrication system |
| 8 | Brake fluid leak or failure of the system's electronic components |
| 9 | Excessive reduction in battery voltage |
| E | EEPROM data error |
Controller errors
For more complete diagnostics, the car needs to be checked with a KKL VAG-COM for 409.1 scanner. To do this, you need the scanner itself and a laptop with the pre-installed Diagnostic Tool v. 1.3.1., which allows you to view all the vehicle’s operating parameters and find out possible problems. Error codes received by such devices will consist of four numbers and a letter located in front of the numbers.
It should be remembered that each letter is responsible for a certain part of the machine components:
The video, shot by the author of CompsMaster, clearly demonstrates the connection of a test laptop to the diagnostic connector and shows the functionality of the program.
Another way to control the ECM is the additional on-board computer State, which is connected directly to the diagnostic connector and installed on the center console. This device is capable of reading almost all operating parameters of various vehicle systems. There are several types of State computers, which are selected according to the model of the ECM unit.
Basic mistakes
The table below summarizes the main error codes for Kalina category “P” without taking into account the letter prefix.
| Number | Decoding |
| 0030, 0031, 0032 | The heating of the lambda probe installed upstream of the converter is faulty (burnout of the spiral or short circuit) |
| 0036, 0037, 0038 | The heating of the lambda probe installed after the converter is faulty (burnout of the spiral or short circuit) |
| 0101 | Operating parameters of the engine air supply sensor are outside the tolerance range |
| 0102 | The signal level from the engine air supply sensor drops below the permissible level |
| 0103 | Increase in signal level from the air supply sensor to the engine above the permissible level |
| 0112 | The signal level from the air temperature sensor at the engine inlet drops below the permissible level |
| 0113 | Increase in signal level from the air temperature sensor at the engine inlet above the permissible level |
| 0115 or 0116 | Incorrect data from the engine temperature sensor |
| 0117 | The signal level from the engine temperature sensor drops below the permissible level |
| 0118 | Increase in signal level from the engine temperature sensor above the permissible level |
| 0122 | The signal level from the throttle angle sensor drops below the permissible level |
| 0123 | Increase in signal level from the throttle angle sensor above the permissible level |
| 0130, 0131 and 0133, 0134 | Missing or low signal from the first lambda probe |
| 0132 | Crankshaft Position Sensor Error |
| 0135 | Incorrect operation of the heating system of the first lambda probe |
| 0136 | Short circuit of the second lambda probe |
| 0137, 0138 | Missing or low signal from the second lambda probe |
| 0140, 0141 | Incorrect operation of the second lambda probe heating system |
| 0171, 0172 | Excessively lean or rich mixture |
| 0201-0204 | Gap in the injector control wiring (from 1 to 4 cylinders) |
| 0217 | Engine temperature goes beyond the upper limit |
| 0230 | Broken fuel pump drive relay |
| 0261, 0262 | Breakdown to "minus" or "plus" of the wiring for controlling the injector of the first cylinder |
| 0264, 0265 | Likewise for the second cylinder |
| 0267, 0268 | Same for the third cylinder |
| 0270, 0271 | Same for the fourth cylinder |
| 0300 | Numerous misfires on all cylinders |
| 0301-0304 | Problems with ignition in a specific cylinder (from 1 to 4 cylinders) |
| 0326-0328 | Failure of the knock sensor |
| 0335-0338 | Damage to the signal circuit from the crankshaft sensor |
| 0340 | Camshaft position sensor does not work (only for 16 valves) |
| 0342, 0343 and 0346 | Phase sensor (only for 16 valves) |
| 0351-0354 | Coil failure (16 valves only) |
| 0363 | Restriction of fuel supply due to ignition misfires |
| 0422 | Low efficiency of the neutralizer |
| 0441, 0444 and 0445 | Absorber malfunctions |
| 0480, 0481 | Radiator fans do not work |
| 0500 | Speed sensor faulty |
| 0506, 0507 | Failure of the idle control system |
| 0511 | No signal from IAC |
| 0560, 0562 and 0563 | Problems with voltage in the on-board network |
| 0601 | ECM memory error |
| 0615-0617 | Problems with the starter relay |
| 0627-0629 | You need to check the fuel pump relay |
| 0645-0647 | Problems with power supply through the relay to the compressor clutch |
| 0650 | Malfunction warning lamp does not work |
| 0654 | Failure of the tachometer circuit |
| 0685-0687 | Closing the main relay circuits |
| 0691, 0692 | Fan relay shorted |
| 1102, 1115 | Drop in resistance of the lambda probe heating coil |
| 1123, 1124 | Violation of mixture parameters at idle |
| 1127, 1128 | The same, but at medium load |
| 1135 | Short circuit of the first lambda probe heater circuit |
| 1136, 1137 | Violation of mixture parameters at low load |
| 1171, 1172 | Incorrect operating parameters of the CO sensor |
| 1335, 1336 | Throttle Position Error |
| 1386 | Errors in the data transmission circuit from the knock sensor |
| 1410, 1425 and 1426 | Absorber purge failure |
| 1500, 1501 and 1502 | Open or short circuit in the fuel pump relay circuit |
| 1509, 1513 and 1514 | Damage to the idle speed control circuit |
| 1606, 1616 | Rough Road Sensor Errors |
| 1620-1622 | Errors in ECU memory blocks |
| 2070, 2071 | Malfunction of the valve for changing the length of the intake channels |
| 2100, 2101 | Open circuit of the electric throttle valve |
| 2102, 2103 | Electric throttle actuator short circuit |
| 2122, 2123, 2127 and 2128 | Damage to the gas pedal position sensor |
| 2187, 2188 | Violation of the mixture composition at idle |
| 2135, 2138 | Asynchronous operation of throttle position sensors |
| 2176, 2178 | It is necessary to set the throttle valve to zero position |
| 2187, 2188 | Violation of the mixture composition at idle |
| 2301, 2304, 2307 and 2310 | Closing the control circuits of the ignition coils |
| 2500, 2501 | Exit of the operating parameters of the generator excitation circuit beyond the tolerance range |
| 0720 | Automatic transmission output shaft sensor faulty |
| 0717 | Failure of the automatic transmission turbine speed sensor |
| 0706, 0705 | Contacts in the automatic transmission selector are faulty |
| 0962, 0963 | Failure of the pressure regulation solenoid in the automatic transmission |
| 0973, 0974 | Failure of the gear shift solenoid in the automatic transmission |
| 0731-0734 | Transmission errors in automatic transmission |
| 0744, 1744 | Automatic transmission clutch malfunctions |
| 0711-0713 | Failure of the automatic transmission oil temperature sensor |
| 0863 | Automatic transmission unit communication error via CAN bus |
| 1735-1738 | Gear selection lock |
| 062F | Resetting the memory of the automatic transmission control unit |
| 230 | No signal from fuel pump relay |
| 263, 266, 269 and 272 | Failure of the control unit (driver) of the injector nozzles |
| 650 | Burnout of the check indicator or its wiring |
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DIAGNOSE YOUR CAR YOURSELF!
the engine is running; the UBAT on-board voltage is in the range of 7.16 V; self-diagnosis of the idle air regulator control driver determined that there was no load at the output. The CHECK ENGINE lamp lights up immediately after a malfunction occurs.
1. Check the resistance of the idle speed regulator windings.
2. Using a multimeter, check for an open circuit in one of the control circuits.
3. Check the resistance of the faulty control circuit with a multimeter. As a result, it is determined where the control circuit break occurred - in the wiring harness or in the controller.
HOW TO CHECK:
Connect the adapter cable to the diagnostic connector. Start the engine. Using the Errors menu, check whether the fault code is currently active.
Code P1514 is not permanent. The MP7.0N controller uses a driver for controlling the idle air regulator, which has a self-diagnosis function. It can detect the presence of faults such as an open, short to ground or overload of the control circuit.
When trouble code P1514 occurs, the driver stops controlling the idle speed control.
After eliminating the malfunction, the driver resumes control of the idle air control only when the ignition is turned off/on.
1. Stop the engine. Disconnect the harness connector from the regulator. Turn on the ignition. Using a multimeter, check the resistance of the idle air control windings.
The resistance between the idle air control contacts “A” and “B”, and “C” and “D” should be 40..80 Ohms. If the resistance is different, the idle air control valve is faulty.
2. Using a multimeter, check the voltage at the contacts of the harness block relative to ground. If the voltage is 4..6 V on all contacts, there is a weak connection in the idle speed control harness block.
3. Turn off the ignition. Disconnect the harness connector from the controller. Using a multimeter, check the resistance of the wire between the contacts of the harness block, at which the voltage is not equal to 4..6 V, and the corresponding contact of the controller block.
Oh no error. RU
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Posts 1 page 12 of 12
Share104-10-2013 01:53:19
Hello, please tell me what error 1514 is, if anyone knows and how to fix it
Share204-10-2013 10:01:29
P1514 Throttle valve control system malfunction. I had one of these come out when the chain broke. Valve train chain. I got it.
First, try resetting, if it happens again, dig.
Share304-10-2013 13:40:16
I reset the engine, it runs fine for a while, then it starts to sputter again and gives the same error, they checked the cylinders, the pressure in the cylinders is excellent.
Share404-10-2013 18:19:56
Share504-10-2013 18:35:36
You understand, the car is in a car service center, so to call it, if it were a normal service in the vicinity, then no questions would arise, but I am conveying the words that the mechanic told me
Share604-10-2013 22:23:59
Mechanic or electrician? Isn't the throttle valve itself stuck?
Share715-10-2013 15:32:19
My personal conclusion is that the problem in the exhaust system and the damper itself has nothing to do with it. I could be wrong , an autopsy will show. I will knock out the afterburner, then the catalyst one by one.
PS The filters have been changed, the pressure in the rail is normal, the spark plugs are new, the EGR is plugged, the soldered EGR blende works perfectly.
Share815-10-2013 17:45:58
What kind of EGR trick is this?
Share916-10-2013 00:39:40
Share1024-10-2013 13:49:47
I got to the garage. The autopsy showed that I was wrong.
Now on topic: Maybe just clean the damper? cases for half an hour along with removal (definitely won’t be superfluous);
cylinder pressure is excellent
If it's not a secret, what is it? I have 13 points in the first three, and 12.5 in the fourth.
Share1124-10-2013 14:14:53
I would like to note that after diagnostics they sent Atlantic Motors without a second thought to get a new damper (the guys don’t want to work at all).
I have long said that Atlantic is no longer the right service to turn to.
It will be useful: Review of gear oil 75w-90. rating of the best transmission oils from motul, castrol, zic and other manufacturers
Share1204-11-2013 00:27:26
The broken bolt is defeated, the chain is set to the marks. The car became playful again, error 1514 does not light up.
Hello, please tell me what error 1514 is, if anyone knows and how to fix it
VAZ-2113 error 1514
The VAZ 2113 car has a Multitronics on-board computer. Lately, error message 1514 often appears. If you look at the description of the error in the on-board computer, it says the following: “IAC control circuit, open or shorted to +12 V.”
Searching for a description on the Internet is also terse:
“Short circuit to the on-board power source (or open circuit) of the idle air regulator (IAC) control circuit.”
As I understand it, the idle speed regulator is covered with the female genital organ. Although the behavior of the car is generally calm, the speed is even. It only spits gasoline from the exhaust pipe: As they said in the store, these sensors are different and NOT interchangeable.
It will be useful: Oil in automatic transmission Pajero Sport: selection and replacement
Question: How can I find out the marking of my idle air control valve, where is it located in the car, and where and when can it be changed?
Thank you. Found it in the photo thanks to your advice
I just googled and found out that vazovodov have a lot of complaints about this error. Opinions agree that this is a software bug in the factory firmware EL36. What kind of firmware do I have, I have no idea
VAZ P1514 fault code
The MP7.0N distributor injection control controller installed on VAZ vehicles has an idle speed regulator control driver with a self-diagnosis function.
Thanks to this, it can detect the presence of faults such as an open circuit, short circuit to ground or overload of the control circuit. If the voltage in the on-board network is in the range of 7 - 16V when the engine is running, and self-diagnosis of the idle speed regulator control driver has determined that there is no load in the regulator control circuit, then the “Check Engine” lamp lights up on the instrument panel and the VAZ fault code P1514 is entered into the controller’s RAM memory . When this code appears in memory, the controller stops controlling the regulator. Control is resumed only after the fault has been eliminated and the ignition has been turned on/off.
Technical description and interpretation of error P0151
This diagnostic trouble code (DTC) is a generic powertrain code. The P0151 code is considered a common code because it applies to all makes and models of vehicles. Although the specific repair steps may vary slightly depending on the model.
DTC P0151 refers to the first oxygen (O₂) sensor located on Bank 2, upstream of the catalytic converter. This sensor measures the amount of oxygen entering the exhaust gases.
It plays an important role in the control circuit that constantly checks the correct air/fuel mixture. Sends a signal that is used to maintain closed-loop fuel delivery.
The meaning of this code is that the O₂ (oxygen sensor) voltage has been low for more than 2 minutes. This is perceived by the Engine Control Module (ECM) as a low voltage condition and therefore sets the P0151 OBD2 fault code.
This code is very similar to errors such as P0131, P0136 and P0137.
What to do if error P0134 occurs
To resolve error P0134, which reports a loss of signal from the oxygen sensor, you will need to diagnose the sensor's power circuit and test it directly. To do this, the car must be placed on a “pit” or overpass. It is recommended to start the test by diagnosing the wiring. If there are no problems with it, and the contacts are not oxidized, you can proceed directly to checking the serviceability of the sensor.
Before you start diagnosing the sensor with a voltmeter, you need to visually inspect it. If there is a problem with the sensor heater or the mixture is too rich, there will be traces of soot on the sensor, which often clogs the element, causing it to fail. Another common cause of lambda probe failure is damage to it by lead, which is excessively contained in the gasoline used. If there are white deposits on the oxygen sensor, this indicates poor additives in the fuel used.
If an external inspection of the oxygen sensor does not help identify the problem, you can proceed to checking it with a voltmeter. Diagnostics of the oxygen sensor occurs as follows:
During the test, it is necessary to monitor the signal from the oxygen sensor. The obtained data is compared with the reference values given in the book on the technical operation of the car. Typically, the signal should vary from 0.2 to 0.9 Volts. Please note: In rare situations, sensor failure may not be due to a lack of signal change or its varying in incorrect values, but to a slow response of the lambda probe. It is believed that every second there should be a change in measurement readings on a warm engine
According to the general rule, the oxygen sensor must be changed every 100 thousand kilometers. Therefore, if error P0134 occurs and the car’s mileage is approaching 100 thousand or has exceeded this value, you can safely change the oxygen sensor without checking, since it will soon fail anyway.
(410 votes, average: 4.56 out of 5)
How to resolve error P1514
The method for eliminating error P1514 depends on the reason that led to its appearance. In general, the following options are possible:
An interesting fact is noted for modern VAZs with firmware “January-7.2” (this could be “Kalina”, “Granta” or another Lada). On numerous forums, their owners note that error P1514 “falls out” for them just like that, due to a “glitch” of the control unit, and in fact, the IAC and its wiring have nothing to do with it. This problem can be resolved by flashing the ECU. Car owners recommend HL52, FL52 or DZ36. However, remember that, firstly, you need to reflash the control unit in a good, trusted car service center, and secondly, even if such firmware is available, it still makes sense to check the regulator and its wiring. However, in this case, you need to start repairs not by flashing the firmware, but simply by resetting the error. This can be done programmatically or simply by disconnecting the negative terminal on the battery for a few seconds.
Sometimes, as a preventive measure, it is recommended to check the MAF ADC. It also makes sense to clean the internal contacts of the main and fuel relays. As a last resort, replace them (if they are significantly worn and/or burnt). For VAZ cars, it is preferable to use a throttle position sensor (TPS), manufactured in Kaluga. If possible, replace with one.
Some car owners experience error P1514 because they fill the gas tank with fuel with a lower octane number than prescribed by the car manufacturer. This is explained by the fact that either in the regulator itself or in its wiring there is some kind of minor damage, which under normal conditions does not show itself. However, when pouring low-octane gasoline, the engine begins to vibrate more, which is why hidden “diseases” may appear. This usually results in broken insulation or electrical contacts somewhere in the circuit.
Please note that when P1514 occurs, the engine control module no longer controls the idle speed control. However, after it is eliminated, IAC control resumes immediately after turning off/on the ignition system.
What and how to check
When diagnosing error P1514, be sure to check the following data:
- The insulation resistance value of the electrical windings of the idle speed control. To do this, use a multimeter with the ability to measure electrical resistance. If such a device is not available, you can use an ohmmeter (this option is less convenient). If the resistance value is low, the windings are damaged.
- Check the mechanical condition of the regulator, its cleanliness and the fit of some other elements, which will be discussed below.
- Integrity of the regulator control circuit. This can also be done using a multimeter, but in the “dialing” mode. The purpose of the test is to find the location of the wire break.
- Insulation resistance value of the regulator control circuit. If the circuit is not broken and the resistance value is low, it means that the insulation somewhere in the circuit (on the wires) is most likely damaged.
- Check that the throttle valve opens completely.
The algorithm for specific actions will depend on the make and model of the car, since everyone’s electrical circuits are different. However, the general algorithm will be the same for everyone. Let's look at it using the example of a common domestic car - the VAZ-2107 with an injection engine. So, the verification algorithm will be as follows:
- If the engine is running, turn it off. Disconnect the terminal block from the idle speed control. Turn on the ignition (without starting the engine). Using a multimeter, measure the insulation resistance value of the IAC windings. You need to measure in pairs between contacts “A” and “B”, and then between “C” and “D”. The corresponding value should be in the range of 40...80 Ohms or close to it (for VAZ cars, but for foreign cars it will be similar). Otherwise, damage to the winding and/or its insulation occurs. Repair in this case is impractical, and in fact, impossible, so the IAC needs to be changed completely.
- Similarly, with the ignition on, you need to check the voltage at the contacts of the block relative to ground. This is also done using a multimeter set to constant voltage measurement mode. If on all contacts relative to ground the voltage value is in the range from 4 to 6 Volts, then there is a weak connection in the idle speed control harness block.
- Turn off the ignition. Disconnect the wiring harness connector from the controller. You need to use a multimeter to measure the resistance value of the wires between the contacts of the harness block, at which the voltage is 4...6 V, as well as the corresponding contact of the controller block. If, as a result of the measurement, it turns out that this value is less than 1 ohm, then this indicates a malfunction of the controller. If the resistance is more than 1 ohm, then you need to look for an open circuit.
- Check the resistance value between all idle air control contacts and ground. The corresponding value should be in the range of 19...21 kOhm or close to it. If this is not the case, it means there is a weak connection in the IAC harness block.
Posts 1 page 12 of 12
Share104-10-2013 01:53:19
Hello, please tell me what error 1514 is, if anyone knows and how to fix it
Share204-10-2013 10:01:29
P1514 Throttle valve control system malfunction. I had one of these come out when the chain broke. Valve train chain. I got it.
First, try resetting, if it happens again, dig.
Share304-10-2013 13:40:16
I reset the engine, it runs fine for a while, then it starts to sputter again and gives the same error, they checked the cylinders, the pressure in the cylinders is excellent.
Share404-10-2013 18:19:56
It will be useful: Repair of abs unit Citroen C4
Share504-10-2013 18:35:36
You understand, the car is in a car service center, so to call it, if it were a normal service in the vicinity, then no questions would arise, but I am conveying the words that the mechanic told me
Share604-10-2013 22:23:59
Mechanic or electrician? Isn't the throttle valve itself stuck?
Share715-10-2013 15:32:19
My personal conclusion is that the problem in the exhaust system and the damper itself has nothing to do with it. I could be wrong , an autopsy will show. I will knock out the afterburner, then the catalyst one by one.
PS The filters have been changed, the pressure in the rail is normal, the spark plugs are new, the EGR is plugged, the soldered EGR blende works perfectly.
Share815-10-2013 17:45:58
What kind of EGR trick is this?
Share916-10-2013 00:39:40
Share1024-10-2013 13:49:47
I got to the garage. The autopsy showed that I was wrong.
Now on topic: Maybe just clean the damper? cases for half an hour along with removal (definitely won’t be superfluous);
cylinder pressure is excellent
If it's not a secret, what is it? I have 13 points in the first three, and 12.5 in the fourth.
Share1124-10-2013 14:14:53
I would like to note that after diagnostics they sent Atlantic Motors without a second thought to get a new damper (the guys don’t want to work at all).
I have long said that Atlantic is no longer the right service to turn to.
