Error p0120 Nissan, Toyota Corolla, Renault Logan, Mitsubishi Lancer 9, Mercedes w203, Nissan Almera 2015

Trouble code P0120 indicates a malfunction in the throttle/pedal position sensor/switch “A” circuit.

This error is common to all modern cars, including Toyota Corolla, Renault Logan, Mitsubishi Lancer 9, Mercedes w203, Nissan Almera and others.

The error is not critical, so you can operate the car, but based on the fact that signs of the problem are floating engine speed, decreased dynamics and jerking of the car, low speed (up to 50 km/h), increased fuel consumption, we can come to the conclusion that The malfunction must be eliminated as soon as possible.

The diagnostic procedure is suitable for all of the above car brands, so, as an example, we will focus only on the Toyota Corolla. But more on that later.

Throttle sensor operation

The sensor records the angle of the throttle valve, this is its main task. It works on a non-contact principle based on the Hall effect. The device can be found directly on the throttle body.

This design solution played a decisive role in the reliability of the device and the accuracy of the measurements it transmitted.

The throttle valve sensor (TDS) also has another designation TP or TPS according to the English abbreviation. It can be with mechanical and electrical drives.

The operation of the remote sensing sensor is ensured by two complementary circuits - VTA1 and VTA2.

The voltage of the signal coming from the first circuit, depending on the throttle valve position angle, changes, thereby the ECU understands what position the throttle valve is in at a certain point in time.

The VTA2 circuit is the monitoring circuit and ensures that there are no failures in the first circuit.

The range of voltage readings supplied from the sensor to the ECU, depending on the car model, may differ, but, as a rule, it is from 0 V (or 0.45) when the throttle is closed and up to 5 Volts when the throttle is fully open.

The ECU uses the received information to:

Creating the correct air-fuel mixture at certain engine operating modes.
Speed adjustments.
Increased fuel supply.

Details in the video.

The first signs of a malfunction, how the car behaves

The electronics of most modern cars are specially configured in such a way that when error p0120 occurs and Check Engine appears on the dashboard, the engine goes into emergency mode.

The ECU controls the entire process. It programmatically turns on intermittent fuel supply and adjusts the ignition timing, thereby reducing engine power.

Next, the damper, due to the action of the return spring, is installed at an angle of 6 (6.5) degrees and does not change its position until the problem is resolved.

As a rule, in emergency mode, after error p0120 appears, the car moves at a speed of no more than 50 km/h with the gas pedal depressed as much as possible.

Those. the engine does not develop speed, the car may jerk, and throttle response will be lost when you press the gas pedal.

This mode of engine operation will remain until the breakdown that caused this error is found and repaired. To do this, you will have to diagnose the machine using a scanner, multimeter and a number of other measures.

How does a mechanic diagnose a P0120 code?

When diagnosing this error, the mechanic will do the following:

Reads all stored data and error codes using an OBD-II scanner to find out when and under what circumstances the P0120
Clear error codes from the computer's memory and test drive the vehicle to see if P0120 appears again
Visually inspect the electrical wires and connectors related to the throttle position sensor “A” for looseness or damage.
Compare the readings of throttle position sensors “A” and “B” using a scanner and, if necessary, replace the faulty sensor

Error Conditions

The VTA1 circuit constantly transmits a signal to the ECU. Error p0120 will occur when the voltage in the circuit, with the throttle valve open, goes outside the standard range (0 to 5 volts) within a certain time interval.

The system is configured in such a way that only one error is recorded per trip.

The voltage and time interval readings for each car model, for example, Renault Logan and Mitsubishi Lancer 9, may differ, but not by much.

Let’s take, for example, a Toyota Corolla whose sensor produces a standard voltage of 0 to 5 Volts.

If the accelerator pedal is completely released, it is 0.5-1.1 V, if it is fully depressed - 3.3-4.9 V. We are talking about the VTA1 circuit.

If the voltage is below 0 or more than 5 volts for 2 or more seconds, the system will generate error p0120.

Very often, this error occurs when driving on mountain roads, when the car is overloaded, the gas pedal is pressed hard and the engine runs for a long time at high speeds.

On which cars is this problem most common?

The problem with code P0120 can occur on different machines, but there are always statistics on which brands this error occurs more often. Here is a list of some of them:

Audi
BMW (BMW E46)
Chery (Chery Tiggo)
Chevrolet (Chevrolet Tahoe)
Citroen
Daewoo (Daewoo Matiz)
Fiat
Ford (Ford Mondeo, Focus)
Hover
Hummer H2
Hyundai (Hyundai Porter, Santa Fe, Terracan)
Infiniti (Infiniti qx4)
Kia
Lexus (Lexus rx300, sc430)
Mazda
Mercedes (Mercedes w203, w211)
Mitsubishi (Mitsubishi Galant, Karizma, Lancer, Montero, Pajero, Tsediya)
Nissan (Nissan Almera, Vanette, Vingroad, Qashqai, Cube, March, Primera, Sunny, X-Trail)
Opel (Opel Astra, Vectra, Vivaro, Zafira, Corsa, Omega)
Peugeot (Peugeot 206, 307, 406)
Renault (Renault Duster, Laguna, Logan, Master, Megan, Sandero, Simbol, Scenic)
Ssangyong (Sangyong Kyron)
Suzuki
Toyota (Toyota Camry, Corolla, Land Cruiser, Mark 2, Solara, Tacoma)
Volkswagen
VAZ

With fault code P0120, you can sometimes encounter other errors. The most common ones are: P0110, P0115, P0121, P0122, P0123, P0124, P0220, P0300, P0340, P0420, P1122, P1410, P1516, P1550, P1705, P2135, B0136, B1421, B1431.

Existing error options

There are four types of error p0120.

When diagnosing, the scanning program designates them as follows:

2009 (001) M16/6 (“Throttle valve actuator”) Actual value potentiometer, Adaptation [p0120] (adaptation error).
2009 (004) M16/6 (“Throttle valve actuator” or “Throttle valve actuator”) Actual value potentiometer or “Actual potentiometer value”, Adaptation Emergency running [p0120] (adaptation start error).
2009 (008) M16/6 (“Throttle valve actuator”) Actual value potentiometer, N3/10 (ME-SFI [ME] control unit) [p0120] (throttle valve actuator) flaps).
2009 (002) M16/6 (“Throttle valve actuator”) Actual value potentiometer, Return spring [p0120] (return spring error).

Symptoms of P0120

The controller turns on the Check Engine Light and enters fail-safe mode, limiting current to the throttle actuator to open the throttle valve approximately 6 degrees.
RPM drops when accelerating.
Floating idle speed.
The car may move very slowly and respond poorly to the gas.
Idle speed may be higher than normal.
In some cases, the engine may not start.

Reasons for the error

Causes of error p0120:

Broken wires going directly from the sensor to the ECU.
Oxidation of contacts in connectors.
Damage to the sensor itself. Short circuit, break in the electrical circuit of the device.
Damage and deformation of the throttle body. Since the sensor is internal, this may affect its operation.
ECU malfunction. A software or electronics failure can cause a false signal to be output to the instrument panel.
Malfunction of the ECM engine control module.
PCM malfunction. A combined control module consisting of an engine control unit (ECU) and a transmission control module (TCM).
The valve is dirty or a foreign object has entered it.
The battery is low.

There are other possible causes that are rare and can only be diagnosed by experienced specialists.

Additional comments for troubleshooting P0120

Along with the P0120 , there may also be other error codes related to the throttle position sensor that need to be investigated and resolved.
The most common cause of P0120 is a faulty throttle position sensor that is not properly detecting the throttle angle.
As a rule, when errors related to the throttle position sensor appear, emergency mode is activated, and the symptoms of such errors are almost the same.

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Diagnostics and troubleshooting

Despite the fact that the throttle position sensor is a simple device in its design, it is located directly in the throttle assembly, which complicates its diagnosis and makes it impossible to remove it as a separate element and replace it.

If your car has a throttle body (RC) with mechanical control via a cable, then you can remove and replace the sensor without replacing the entire remote control.

Inspection of the throttle valve assembly

Deposits and contaminants built up on and around the throttle valve, as well as foreign objects, can cause the P0120 code. All this can be revealed by visual inspection.

To remove contaminants, use a regular carburetor cleaner. This is not a difficult task even for an inexperienced driver.

It would also be a good idea to remove the intake air manifold and check the condition of the gaskets and O-rings. If necessary, replace them and seal them with sealant.

If after removing all contamination, error p0120 does not disappear, further diagnostics must be carried out. In rare cases, it all ends with a complete replacement of the throttle assembly.

Renault diagnostic error codes

P0089 Fuel Metering Solenoid Circuit Low Voltage C-023P0089 Fuel Metering Solenoid Valve Circuit Malfunction C-023P0100 MAF Sensor Circuit High Input C-016P0100 MAF Sensor Circuit Low Input C-016P0100 MAF Sensor Power Supply Circuit Out of Range Performance C-016P0100 MAF Sensor Circuit Out of Range/Performance B-020P0105 Boost Pressure Sensor Circuit High Input C-017P0105 Boost Pressure Sensor Circuit Low Input C-017P0105 Boost Pressure Sensor Circuit Out of Range/Performance B-026P0105 Boost Pressure Sensor Circuit Invalid C-017P0112 Intake Air Temperature Sensor Circuit Low Input C-015P0113 Intake Air Temperature Sensor Circuit High Input C-015P0115 Engine Coolant Temperature Sensor Circuit High Input C-031P0115 Engine Coolant Temperature Sensor Circuit Input Low Engine Fluid C-031P0115 Engine Coolant Temperature Sensor Circuit Out of Range/Operating. B-029P0180 Fuel Temperature Sensor Circuit Low Input C-021P0191 Fuel Rail Pressure Sensor Circuit Range/Performance B-023P0192 Fuel Rail Pressure Sensor Circuit Low Input C-022P0193 Fuel Rail Pressure Sensor Circuit Low Input High C-022P0200 Fuel Injector Circuit Malfunction C-024P0200 Fuel Injector Circuit High Voltage C-024P0200 Fuel Injector Circuit Voltage Low C-024P0201 Cylinder 1 Injector Circuit Open C-025P0202 Cylinder 2 Injector Circuit Open C-026P0203 Open cylinder 3 injector circuits C-027P0204 Cylinder 4 injector circuit open C-028P0230 Fuel pump relay high C-019P0230 Fuel pump relay low C-019P0301 Cylinder 1 misfire detected B-022P0302 Cylinder 2 misfire detected B-022P0303 Cylinder 2 misfire detected B-022P0303 Cylinder 2 misfire detected in a cylinder 3 B-022P0304 Cylinder 4 misfire detected B-022P0336 Crankshaft position sensor circuit performance C-011P0340 Camshaft position sensor circuit High input signal C-012P0341 Camshaft position sensor circuit Shaft Out of Range/Performance C-012P0381 Glow Timing Lamp Circuit High Voltage C-037P0381 Glow Timing Lamp Circuit Voltage Low C-037P0400 EGR Circuit High Input B-024P0400 EGR Circuit Low Input B- 024P0400 Insufficient EGR flow detected B-024P0400 Excessive EGR flow detected B-024P0404 EGR circuit out of range/performance (open valve) B-024P0480 Cooling fan relay output terminal 1 circuit high voltage C-032P048 0 Open circuit output Cooling Fan Relay Clamp 1 B-035P0500 Vehicle Speed Sensor Circuit High Input B-008P0500 Vehicle Speed Sensor Circuit Signal Incorrect B-008P0500 Vehicle Speed Sensor Circuit Out of Range/Performance B-008P0530 A/C Pressure Input High Air Conditioning System B-002P0530 A/C Pressure Input Low Air Conditioning System B-002P0530 A/C Pressure Out of Range/Performance Air Conditioning System B-002P0560 System Voltage Malfunction B-033P0606 Replace Control Module C-002P0660 Coolant Temperature Warning Lamp Voltage High C-038P0660 Voltage Low Coolant Temperature Warning Light C-038P0704 Clutch Switch Input Circuit Malfunction C-014P0725 Vehicle Speed Sensor Input Circuit Incorrect C-011P1105 Barometric Pressure Sensor Circuit Input High C-002P1105 Barometric Pressure Sensor Circuit Input Low C-002P1120 Sensor Input High 1 Accelerator Pedal Position Sensor 1 C-010P1120 Accelerator Pedal Position Sensor 1 Input Low C-010P1120 Accelerator Pedal Position Sensor 1 Power Supply Circuit Out of Performance Range C-010P1122 Accelerator Pedal Position Sensor 2 Input High C-010P1122 Accelerator Pedal Position Sensor 2 Input Low Input given Accelerator Pedal Position Sensor 2 Power Circuit Out of Performance Range C-010P1122 Accelerator Pedal Position Sensor 1-2 Correlation C-010P1125 Boost Pressure Solenoid Valve High Voltage C-018P1125 Boost Pressure Solenoid Valve Voltage Low C-018P1125 Insufficient flow detected through boost pressure solenoid valve B-027P1125 Excessive flow through boost pressure solenoid valve detected B-027P1180 Fuel temperature sensor circuit high input C-021P1264 Water detected in fuel, or sensor circuit open. B-031P1372 Crankshaft sensor segment error C-011P1400 EGR current too high (valve/output stage) B-024P1400 EGR valve failure B-024P1404 EGR valve stuck B-024P1530 A/C relay voltage high A/C system air rationing B-008P1530 A/C Relay Voltage Low Air Conditioning System B-008P1560 System Voltage Input High C-004P1560 System Voltage Input Low C-004P1571 Brake Switch Circuit Malfunction B-032P1600 Electronic Control Unit (ECU) Incorrect Operation C-042P1604 Replace the ECU C-002P1610 Immobilizer Malfunction C-006P1620 Sensor 1 Supply Voltage Input High C-008P1620 Sensor 1 Supply Voltage Input Low C-008P1622 Electronic Control Unit (ECU) Failure - Power Supply Voltage High C-002P1622 Electronic Control Unit (ECU) Supply Voltage Failure - Power Supply Voltage Low C-002P1625 Power Supply Relay Off Too Early C-003P1625 Power Supply Relay Off Too Late C-003P1631 Immobilizer Signal Incorrect C-006P1635 Sensor 2 Supply Voltage Input High C-009P1635 Sensor 2 Supply Voltage Input Low C-009P1635 Supply Voltage High Input Pre-Glower Circuit Signal C-030P1635 Pre-Glower Circuit Open B-034P1635 General Pre-Glower Circuit Failure C-030P1642 Auxiliary Heater Relay 1 Circuit Input High C-033P1642 Auxiliary Heater Relay 1 Circuit Input Low C-033P1643 Input Signal High Auxiliary Heater Relay 2 Circuit Input Low C-034P1644 Auxiliary Heater Relay 3 Circuit Input Low C-035P1644 Auxiliary Heater Relay 3 Circuit Input Low C-035P1694 Preheater Timing Indicator Lamp C High Input -037P1694 Open circuit of the pre-glow time indicator lamp C-037

EDC 16C36 G9U630

P0016 Crankshaft and Camshaft Correlation B-012P0045 Boost Pressure Valve Voltage Low B-035P0045 Boost Pressure Valve Voltage High B-035P0045 Boost Pressure Valve Circuit Open B-035P0045 Boost Pressure Valve Range/Performance B-035P0089 Boost Pressure Valve Circuit Malfunction Fuel B -014P0089 Line Pressure Low B-014P0089 Line Pressure High B-014P0090 Fuel Metering Solenoid Valve Circuit Low Voltage B-036P0090 Fuel Metering Solenoid Valve Circuit High Voltage B-036P0090 Fuel Metering Solenoid Valve Circuit Open B-036P0090 Fuel Metering Solenoid Valve Circuit Open Out of Range/Performance B-036P0100 MAF Sensor Circuit High Input B-032P0100 MAF Sensor Circuit Low Input B-032P0100 MAF Sensor Circuit Out of Range/Performance B-032P0110 Intake Temperature Sensor Circuit Low Input C-011P0110 Intake Air Temperature Sensor Circuit High Input C-011P0115 Engine Coolant Temperature Circuit Low Input C-015P0115 Engine Coolant Temperature Circuit High Input C-015P0120 Throttle Position Sensor Voltage Low B-034P0120 Position Sensor Voltage High B-034P0120 Throttle Position Sensor Circuit Open B-034P0120 Throttle Position Sensor Circuit Malfunction B-034P0120 Throttle Position Sensor Circuit Out of Range/Performance B-034P0130 O2 Sensor Circuit High Voltage (Bank 1, Sensor 1) B -039P0130 O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1) B-039P0130 O2 Sensor 1 Circuit Open B-039P0130 O2 Sensor Circuit Out of Performance Range (Bank 1 Sensor 1) B-039P0130 O2 Sensor Circuit (Bank 1 Sensor 1) Range/Performance when off Fuel Deceleration B-039P0135 Sensor 02 Heater Circuit High (Bank 1, Sensor 1) B-038P0135 Sensor 02 Heater Circuit Low Voltage (Bank 1, Sensor 1) B-038P0135 Sensor 02 Heater Circuit Open (Bank 1, Sensor 1) Sensor 1) B-038P0135 O2 Sensor Heater Circuit Input Low (Bank 1 Sensor 1) B-038P0135 O2 Sensor Heater Circuit Input High (Bank 1 Sensor 1) B-038P0135 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1) B-038P0180 Fuel Temperature Sensor Circuit Low Input C-016P0180 Fuel Temperature Sensor Circuit High Input C-016P0190 Guide Vane Pressure Sensor Low Voltage C-021P0190 Guide Vane Pressure Sensor High Voltage C-021P0190 Guide Vane Pressure Range /Performance C-021P0201 Cylinder 1 Injector Circuit Open C-023P0201 Cylinder 1 Fuel Injector Malfunction C-023P0201 Cylinder 1 Fuel Injector Circuit Short C-023P0202 Cylinder 2 Injector Circuit Open C-024P0202 Circuit Short fuel injector cylinder 2 C-024P0202 Cylinder 2 Fuel Injector Fault C-024P0203 Cylinder 3 Injector Circuit Open C-025P0203 Cylinder 3 Fuel Injector Circuit Short C-025P0203 Cylinder 3 Fuel Injector Fault C-025P0204 Cylinder 4 Injector Circuit Short C-026P0 204 Short circuit of the fuel injector circuit of cylinder 4 C -026P0204 Cylinder 4 Fuel Injector Malfunction C-026P0225 Accelerator Pedal Position Sensor 1 High Voltage C-009P0225 Accelerator Pedal Position Sensor 1 Voltage Low C-009P0225 Incorrect Accelerator Pedal Position Sensor 1 to Accelerator Pedal Position Sensor 2 Voltage B-042P0235 High Input pressure sensor circuit signal Boost C-013P0235 Boost Pressure Sensor Circuit Input Low C-013P0235 Boost Pressure Sensor Circuit Out of Range/Performance B-018P0297 Vehicle Speed Too High During Regeneration C-050P0300 Random Misfire Detected on Multiple Cylinders B-040P0301 Misfire Detected on Multiple Cylinders Cylinder 1 misfire B-040P0302 Cylinder 2 misfire detected B-040P0303 Cylinder 3 misfire detected B-040P0304 Cylinder 4 misfire detected B-040P0335 Crankshaft position sensor signal out of range/tech. characteristics C-020P0335 Crankshaft position sensor circuit Malfunction C-020P0340 Camshaft position sensor circuit Shaft Out of Range/Performance B-033P0340 Camshaft Position Sensor Circuit Malfunction B-033P0380 Malfunction Glow Timing Relay Circuits B-025P0120 Throttle Position Sensor High Voltage B-034P0404 Exhaust Gas Pressure Regulator Valve Fault C-028P0409 EGR Valve Feedback Voltage High. gas C-028P0409 Exhaust recirculation valve feedback voltage low. Gas C-028P0480 Cooling Fan Relay Output Terminal 1 Circuit High B-026P0480 Cooling Fan Relay Output 1 Circuit Low Voltage B-026P0480 Cooling Fan Relay Output Terminal 1 Circuit Open B-026P0480 Cooling Fan Relay Output 1 Circuit Failure B-026P0481 Circuit High Voltage Cooling Fan Relay Output Terminal 2 B-027P0481 Cooling Fan Relay Output 2 Circuit Low B-027P0481 Cooling Fan Relay Output Terminal 2 Circuit Open B-027P0481 Cooling Fan Relay Output 2 Circuit Low B-027P0487 EGR Circuit Low Voltage C-028P0487 High EGR circuit voltage C-028P0487 EGR circuit open C-028P0487 EGR valve short circuit C-028P0488 EGR valve stuck closed B-016P0488 EGR valve stuck open B-016P04 88 Recirculation valve malfunction B-016P0488 Exhaust Gas Recirculation Valve Circuit Out of Range/Performance B-016P0530 A/C Pressure Sensor Circuit Low Input HVAC System C-002P0530 A/C Pressure Sensor Circuit High Input HVAC System C -002P0544 Exhaust temperature sensor circuit. gases in front of the turbocharger - low voltage C-033P0544 Exhaust temperature sensor circuit. Pre-Turbocharger Gas - High Voltage C-033P0560 System Voltage Input Low C-002P0560 System Voltage Input High C-002P0560 System Voltage Out of Range C-002P0571 Brake Switch Circuit Malfunction B-023P0606 Electronic Control Unit (ECU) Malfunction C-001P0611 Injector Parameter Adjustment Not Programmed B-045P0611 Injector Parameter Adjustment - Programming Error B-045P062B Electronic Control Unit (ECU) - Malfunction C-001P062F Electronic Control Unit (ECU) EEPROM Error B-046P0641 Sensor 1 Supply Voltage: Low Voltage C-005P0641 Voltage Sensor 1 Supply: High Voltage C-005P0645 A/C Relay Low Voltage HVAC System B-010P0645 A/C Relay High Voltage HVAC System B-010P0645 A/C Relay Circuit Open HVAC System B- 010P0645 A/C Relay Circuit Malfunction HVAC System B-010P0651 Sensor 2 Supply Voltage Low C-006P0651 Sensor 2 Supply Voltage High C-006P0670 Pre-Glow Circuit Voltage High B-025P0670 Pre-Glower Circuit Voltage Low B-025P0670 Preheater circuit open B-025P0670 Fault. Glow Timing Relay Circuits B-025P0685 Power Relay Off Too Early C-002P0685 Power Relay Off Too Late C-002P0697 Sensor 3 Supply Voltage: Low Voltage C-007P0697 Sensor 3 Supply Voltage: High Voltage C-007P0830 Clutch Switch Input Circuit Failure C- 018P1435 DPF regeneration cycle interrupted several times B-041P1436 Dust filter regeneration failure B-041P1641 Auxiliary heater relay 1 circuit high input B-030P1641 Auxiliary heater relay 1 circuit input low B-030P1641 Auxiliary heater relay 1 circuit open B-030P1 641 Auxiliary Heater Relay 1 Circuit Malfunction B-030P1642 Auxiliary Heater Relay 2 Circuit Input High B-029P1642 Auxiliary Heater Relay 2 Circuit Input Low B-029P1642 Auxiliary Heater Relay 2 Circuit Circuit Open B-029P1642 Auxiliary Heater Relay 2 Circuit Input B -029P1643 Auxiliary Heater Relay 3 Circuit High Input B-031P1643 Auxiliary Heater Relay 3 Circuit Input Low B-031P1643 Auxiliary Heater Relay 3 Circuit Open B-031P1643 Auxiliary Heater Relay 3 Circuit Malfunction B-031P2002 DPF Pressure Sensor Signal Out Range/Performance B-041P2031 Exhaust Gas Temperature Sensor Voltage Low (Bank 1 Sensor 1) C-031P2031 Exhaust Gas Temperature Sensor Voltage High (Block 1 Sensor 1) C-031P2120 Accelerator Pedal Position Sensor 2 Voltage High C-010P2120 Sensor Voltage Low 2 Accelerator Pedal Position C-010P2120 Accelerator Pedal Position Sensor 1 to Accelerator Pedal Position Sensor 2 Signal Incorrect B-042P2146 Internal Control Module Malfunction C-027P2149 Internal Control Module Malfunction C-027P2226 Barometric Pressure Sensor Circuit Input Low C-008P2226 Sensor Circuit Input High Barometric Pressure C-008P2263 Boost Pressure High Pressure B-043P2263 Boost Pressure Low Pressure B-043P2269 Water in Fuel Sensor Input High B-024P2299 Accelerator Pedal Position Sensor Signal Inconsistent with Brake Switch Signal B-042P2299 Pedal Position Sensor Signal No Signal accelerator B-042P2299 Accelerator pedal stuck B-042P2425 High. bypass electromagnetic circuit voltage Exhaust Gas Recirculation Cooler Valve B-037P2425 Low Voltage bypass electromagnetic circuit exhaust gas recirculation cooler valve B-037P2425 Open circuit of the bypass solenoid valve circuit. EGR cooler valve B-037P2425 Bypass solenoid circuit malfunction. EGR Cooler Valve B-037P242A Exhaust Gas Temperature Sensor Voltage Low (Bank 1 Sensor 2) C-032P242A Exhaust Gas Temperature Sensor Voltage High (Block 1 Sensor 2) C-032P242F Diesel Particulate Filter Overload B-041P2452 Particulate Pressure Sensor Voltage High filter C-030P2452 DPF pressure sensor low voltage C-030P2452 DPF pressure sensor open circuit C-030P2453 DPF pressure sensor differential pressure low B-041P2453 DPF pressure sensor hose line fault B-041P2453 DPF pressure sensor differential pressure B unreliable -041P2502 Alternator Terminal F Voltage High C-051P2502 Alternator Terminal F Voltage Low C-051P2502 Alternator Terminal F Circuit Malfunction C-051P2505 Ignition Circuit Malfunction B-022P253F Oil Quality Low B-019P2A00 O2 Sensor - System too lean (Bank 1) B-039P2A00 O2 sensor - system too rich (Bank 1) B-039P2A00 O2 sensor circuit malfunction (Bank 1, sensor 1) B-039U0101 No CAN-BUS communication with MTA transmission control module (Easytronic) C -006U0415 Vehicle speed sensor input frequency too high B-008

EDC16CP33 M9R780

P0016 Crankshaft and Camshaft Correlation B-012P0045 Boost Pressure Valve Voltage Low B-033P0045 Boost Pressure Valve Voltage High B-033P0045 Boost Pressure Valve Circuit Open B-033P0045 Boost Pressure Valve Range/Performance B-033P0089 Boost Pressure Valve Circuit Malfunction Fuel B -014P0089 Line pressure low B-014P0089 Line pressure high B-014P0090 Fuel metering solenoid valve circuit low B-034P0090 Fuel metering solenoid valve circuit high B-034P0090 Fuel metering solenoid valve circuit open B-034P0090 Fuel metering solenoid valve circuit Out of Range/Performance B-034P0100 MAF Sensor Circuit High Input B-031P0100 MAF Sensor Circuit Low Input B-031P0100 MAF Sensor Circuit Out of Range/Performance B-031P0101 Mass or Volume Air Flow Sensor Circuit B-031P0110 Intake Air Temperature Sensor Circuit Low Input C-011P0110 Intake Air Temperature Sensor Circuit High Input C-011P0115 Engine Coolant Temperature Circuit Input Low C-015P0115 Engine Coolant Temperature Circuit High Input C-015P0120 Circuit Open or Open Accelerator Pedal Position Sensor Circuit Low Voltage C-030P0120 Throttle Position Sensor Circuit High Voltage C-030P0180 Fuel Temperature Sensor Circuit Low Input C-016P0180 Fuel Temperature Sensor Circuit High Input C-016P0190 Guide Vane Pressure Sensor Voltage Low C-021P0190 Sensor Guide Vane Pressure High Voltage C-021P0190 Guide Vane Pressure Range/Performance C-021P0200 Injector Control Circuit Low Voltage C-028P0200 Injector Control Circuit High Voltage C-028P0200 Injector Control Short C-028P0201 Cylinder 1 Injector Circuit Open C-024P 0201 Cylinder 1 Fuel Injector Circuit Short C-024P0201 Cylinder 1 Fuel Injector Circuit Short C-024P0202 Cylinder 2 Injector Circuit Open C-025P0202 Cylinder 2 Fuel Injector Circuit Short C-025P0202 Cylinder 2 Fuel Injector Circuit Short C-025P0203 Cylinder 3 C injector circuit open -026P0203 Cylinder 3 Fuel Injector Circuit Short C-026P0203 Cylinder 3 Fuel Injector Malfunction C-026P0204 Cylinder 4 Injector Circuit Open C-027P0204 Cylinder 4 Fuel Injector Circuit Short C-027P0204 Fuel Injector Cylinder 4 Malfunction C-027P0225 Sensor 1 High Voltage Accelerator Pedal Position Sensor 1 Voltage Low C-009P0225 Accelerator Pedal Position Sensor 1 Voltage Low C-009P0225 Accelerator Pedal Position Sensor 1 to Accelerator Pedal Position Sensor 2 Signal Ratio Incorrect B-039P0235 Boost Pressure Sensor Circuit High Input C-013P0235 Boost Pressure Sensor Circuit Low Input C-013P0235 Boost Pressure Sensor Circuit Out of Range/Performance B-018P0300 Random Misfire on Multiple Cylinders B-037P0301 Misfire on Cylinder 1 B-037P0302 Misfire on Cylinder 2 B-037P0303 Misfire on Cylinder 3 B-037P0304 Reported misfire in cylinder 4 B-037P0335 Crankshaft position sensor signal out of range / tech. characteristics C-020P0335 Crankshaft position sensor circuit Malfunction C-020P0340 Camshaft position sensor circuit Shaft Out of Range/Performance B-032P0340 Camshaft Position Sensor Circuit Malfunction B-032P0380 Pre-Glower Circuit Low Voltage B-024P0380 Pre-Glower Circuit Voltage High or Open B-024P0409 EGR Valve Feedback Voltage High gas C-029P0409 Exhaust recirculation valve feedback voltage low. Gas C-029P0480 Cooling Fan Relay Output Terminal 1 Circuit High B-025P0480 Cooling Fan Relay Output 1 Circuit Low Voltage B-025P0480 Cooling Fan Relay Output Terminal 1 Circuit Open B-025P0480 Cooling Fan Relay Output 1 Circuit Failure B-025P0481 Circuit High Voltage Cooling Fan Relay Output Terminal 2 B-025P0481 Cooling Fan Relay Output 2 Circuit Low B-025P0481 Cooling Fan Relay Output Terminal 2 Circuit Open B-025P0481 Cooling Fan Relay Output 2 Circuit Low B-025P0487 EGR Circuit Low Voltage C-029P0487 High EGR circuit voltage C-029P0487 EGR circuit open C-029P0487 EGR valve short circuit C-029P0487 EGR circuit Malfunction C-029P0488 EGR valve stuck closed B-016P048 8 Exhaust gas recirculation valve stuck in open B-016P0488 EGR valve failure B-016P0488 EGR valve circuit out of range/performance B-016P0500 Vehicle speed signal circuit high input B-008P0500 Vehicle speed signal missing B-008P0500 Vehicle speed signal does not match speed Engine and Injection Ground B-008P0530 HVAC System A/C Pressure Sensor Circuit Low Input C-002P0530 HVAC System A/C Pressure Sensor Circuit High Input C-002P0560 System Voltage Input Low C-002P0560 High system voltage input C-002P0560 System voltage out of range C-002P0571 Brake switch circuit malfunction B-022P0606 Electronic control unit (ECU) - malfunction C-001P0611 Injector parameter adjustment not programmed B-038P0611 Injector parameter adjustment - Programming error B-038P062B Electronic control unit (ECU) - malfunction C-001P062F Electronic control unit (ECU) EEPROM error B-043P0641 Sensor 1 supply voltage: low voltage C-005P0641 Sensor 1 supply voltage: high voltage C-005P0645 Air conditioning relay voltage low HVAC system Air Conditioning B-010P0645 Air Conditioning Relay High Voltage HVAC System B-010P0645 Air Conditioning Relay Circuit Open HVAC System B-010P0645 Air Conditioning Relay Circuit Malfunction HVAC System B-010P0651 Sensor Supply Voltage 2: Low Voltage C-006P0651 Sensor Supply Voltage 2: High Voltage C-006P0670 Pre-Glower Circuit Low Voltage B-024P0670 Pre-Glower Circuit Voltage High B-024P0670 Pre-Glower Circuit Open B-024P0670 Fault. Glow Timing Relay Circuits B-024P0685 Power Relay Off Too Early C-002P0685 Power Relay Off Too Late C-002P0697 Sensor 3 Supply Voltage: Low Voltage C-007P0697 Sensor 3 Supply Voltage: High Voltage C-007P0830 Clutch Switch Input Circuit Failure C- 018P1201 Cylinder 1 Fuel Injector Malfunction C-024P1202 Cylinder 2 Fuel Injector Malfunction C-025P1203 Cylinder 3 Fuel Injector Malfunction C-026P1204 Cylinder 4 Fuel Injector Malfunction C-027P1641 Relay Circuit High Input 1 Auxiliary Heater B-029P1641 Relay Circuit 1 Low Input B-029P1641 Auxiliary Heater Relay 1 Circuit Open B-029P1641 Auxiliary Heater Relay 1 Circuit Malfunction B-029P1642 Auxiliary Heater Relay 2 Circuit High Input B-028P1642 Auxiliary Heater Relay 2 Circuit Input Low B-028P1642 Relay Circuit Open Auxiliary Heater 2 Relay Circuit Failure B-028P1643 Auxiliary Heater Relay 2 Circuit Input High B-030P1643 Auxiliary Heater Relay 3 Circuit Input Low B-030P1643 Auxiliary Heater Relay 3 Circuit Input Low B-030P1643 Auxiliary Heater Relay 3 Circuit Open B-030P1643 Fault rightness Auxiliary Heater Relay 3 Circuits B-030P1670 Glow Plug Option Not Programmed B-044P2100 Electronic Throttle Control Low Voltage C-030P2100 Electronic Throttle Control Voltage High C-030P2100 Electronic Throttle Control Circuit Open C-030P2100 Throttle Control System Short Circuit flap C-030P2100 Throttle control system malfunction C-030P2101 Electronic control system circuit Throttle valve out of range/performance C-030P2101 Throttle control system malfunction C-030P2120 Accelerator pedal position sensor 2 voltage high C-010P2120 Accelerator pedal position sensor 2 voltage low C-010P2120 Accelerator pedal position sensor 1 to sensor 2 voltage is incorrect ator B -039p2146 Falf in the internal control module C-028P2149 Falf in the internal control module C-028P2226 Low input signal of the Barometric pressure sensor C-008P2226 SECTION OF Barometric pressure sensor C-008P2263 BOOD TOUNT TOUNTS PIENTION BO-040P222223 Low pressure B-040P2269 Water in Fuel Sensor High Input B-023P2293 Main Pressure Sensor Low Input B-042P2293 Main Pressure Sensor High Input B-042P2293 On Rail Pressure Control Malfunction B-042P2294 Main Control Solenoid Valve Circuit Low Voltage B-026P2294 Rail Pressure Control Solenoid Valve Circuit High Voltage B-026P2294 Rail Pressure Control Solenoid Valve Circuit Open B-026P2294 Rail Pressure Control Solenoid Valve Circuit Malfunction B-026P2299 Accelerator Pedal Position Sensor Signal Inconsistent With Brake Switch Signal B- 039P2299 No accelerator pedal position sensor signal B-039P2299 Accelerator pedal stuck B-039P2425 High. bypass electromagnetic circuit voltage Exhaust Gas Recirculation Cooler Valve B-035P2425 Low Voltage bypass electromagnetic circuit exhaust gas recirculation cooler valve B-035P2425 Open circuit of the bypass solenoid valve circuit. EGR cooler valve B-035P2425 Bypass solenoid circuit malfunction. EGR cooler valve B-035P2502 Alternator terminal F circuit malfunction C-044P2505 Ignition circuit malfunction B-021U0101 No CAN-BUS communication with transmission control module C-001

Let's summarize

As practice shows, error p0120 often occurs due to contamination of the throttle valve assembly and the presence of a carburetor cleaner will be sufficient to solve the problem.

Replacing the throttle assembly, ECU and other modules is most likely the exception rather than the rule. In most cases, cleaning the throttle valve, cleaning the connector contacts, and eliminating broken wiring is sufficient to fix the problem.

And remember, p0120 is not critical, but you won’t be able to get 100% of its capabilities from the car. Therefore, you will have to look for and eliminate the causes of the error in any case.

Label: Sensors