PowertrainP0120

Caution

Severity: Caution - get it checked when you can

Throttle/Pedal Position Sensor/Switch A Circuit

43 brands affected · Generic SAE J2012 description.

Key terms: Oxygen sensor: measures oxygen in the exhaust gas · Mass air flow sensor: measures the air going into the engine · SAE J2012: the standard generic code list · Powertrain: engine, transmission and emissions

1What it means in plain English

This code is in the fuel, air and oxygen sensor range, which also includes coolant temperature faults.

2Common causes

Dirty or faulty mass air flow sensor
Vacuum or intake air leak
Weak fuel pump or clogged fuel filter
Faulty fuel injector
Faulty oxygen sensor
Wiring or connector fault

3Can I drive?

Caution · drive with care

Have it diagnosed if the engine runs badly or the code keeps returning. Because this range includes coolant temperature sensors, watch the temperature gauge: if it climbs into the red, or the engine overheats or stalls, stop safely and get professional help.

This page gives general information. It is not professional advice. For a definite diagnosis and a repair quote, ask a qualified mechanic to inspect the car.

4Brand data 43

Brand	Code	Description	System
Ashok Leyland CV	P0120	Cylinder 3. Activation Signal Of The Injector. Learning Process Error. Out Of Limit Brand	Powertrain
BAIC Motor	P0120	Throttle sensor circuit fault Brand	Powertrain
Mercedes-Benz	P0120	Throttle/Pedal Position Sensor/Switch A Circuit SAE	Powertrain
BMW	P0120	DME: Signal, throttle potentiometer Brand	Powertrain
BYD	P0120	TP sensor Brand	Powertrain
Chery	P0120	TP sensor Brand	Powertrain
Chrysler	P0120	Throttle Position Sensor (TPS) 1/2 correlation Brand	Powertrain
Daewoo	P0120	TPS 1 low voltage Brand	Powertrain
Daihatsu	P0120	Throttle Sensor System Brand	Powertrain
DFFS	P0120	Throttle position sensor fault Brand	Powertrain
DFFX	P0120	TP sensor Brand	Powertrain
DFXK	P0120	Throttle sensor signal circuit fault Brand	Powertrain
EOBD	P0120	Kiihdytinpoljin/asentoanturi/kytkin 'A' piiri Brand	Powertrain
Ford	P0120	Throttle/Pedal Position Sensor/Switch A Circuit SAE	Powertrain
Geely	P0120	TP sensor Brand	Powertrain
GM	P0120	Throttle position (TP) sensor circuit Brand	Powertrain
Great Wall	P0120	TP sensor Brand	Powertrain
Hafei	P0120	TP sensor Brand	Powertrain
Holden	P0120	Throttle Position Sensor 1 Circuit Brand	Powertrain
Honda	P0120	Throttle/Pedal Position Sensor/Switch A Circuit SAE	Powertrain
Hyundai	P0120	Throttle/Pedal Position Sensor/Switch A Circuit SAE	Powertrain
Isuzu	P0120	Throttle/Pedal Position Sensor/Switch A Circuit SAE	Powertrain
Land Rover	P0120	Throttle position circuit malfunction Brand	Powertrain
Mahindra	P0120	Throttle/Pedal Position Sensor/Switch A Circuit SAE	Powertrain
Maserati	P0120	Throttle Position Sensor 1 Circuit Brand	Powertrain
Mazda	P0120	Throttle/Pedal Position Sensor/Switch A Circuit SAE	Powertrain
Mitsubishi	P0120	TP sensor Brand	Powertrain
Nissan	P0120	Throttle position sensor Brand	Powertrain
Opel	P0120	Throttle position (TP) sensor circuit Brand	Powertrain
Perodua	P0120	Throttle Sensor System Brand	Powertrain
Peugeot	P0120	Throttle/Pedal Position Sensor/Switch A Circuit SAE	Powertrain
Porsche	P0120	Fahrpedal Potentiometer 1 Brand	Powertrain
Proton	P0120	TP sensor Brand	Powertrain
Saab	P0120	Circuito sensore posizio. farfal. Brand	Powertrain
MG (SAIC)	P0120	Fault flag in Pedal Information plausibility Brand	Powertrain
Smart	P0120	Throttle/Pedal Position Sensor/Switch A Circuit SAE	Powertrain
Sprinter	P0120	Throttle/Pedal Position Sensor/Switch A Circuit SAE	Powertrain
Subaru	P0120	Throttle/Pedal Position Sensor/Switch A Circuit SAE	Powertrain
Suzuki	P0120	Throttle Position/Pedal Position Sensor/Switch A Circuit Brand	Powertrain
SWM Motor	P0120	Throttle sensor circuit failure Brand	Powertrain
Tata	P0120	Limp Home Mode Activated Brand	Powertrain
Toyota	P0120	Throttle position sensor fault Brand	Powertrain
Volkswagen	P0120	Throttle Position Sensor (G69): Circuit Malfunction Brand	Powertrain

Legend: SAE is the generic J2012 description; Brand is text taken from that manufacturer’s data. Manufacturer rows keep the wording and language of the source data, and non-English text is tagged so screen readers pronounce it correctly.

5Extended variant codes 12

These 7-character codes are manufacturer-specific variants of P0120 and may be reported by some scan tools.

Brand	Code	Description	System
SsangYong	P012000	Accelerator pedal sensor #1 malfunction - supply voltage fault Brand	Powertrain
Volvo	P012000	The diagnostic trouble code (DTC) is only generated if any of the diagnostic trouble codes ECM-, ECM-P012200 or ECM-P012300 have been detected Brand	Powertrain
SsangYong	P012001	No.1 throttle position sensor - low voltage Brand	Powertrain
SsangYong	P012002	No.1 throttle position sensor - high voltage Brand	Powertrain
SsangYong	P012005	No.2 throttle position sensor - low voltage Brand	Powertrain
SsangYong	P012006	No.2 throttle position sensor - high voltage Brand	Powertrain
SsangYong	P012013	Both throttle position sensors malfunction Brand	Powertrain
SsangYong	P012014	Inconsistent signals of no.1 and no.2 throttle position sensors Brand	Powertrain
SsangYong	P012016	TPS valve inconsistent with HFM sensor value Brand	Powertrain
SsangYong	P012018	Throttle actuator control malfunction Brand	Powertrain
SsangYong	P012020	Throttle actuator - insufficient supply power Brand	Powertrain
SsangYong	P012022	Intake air flow sensor and throttle sensor malfunction Brand	Powertrain

6Related codes

Browse Pxxx codes or P012xx codes.