PowertrainP0123

Caution

Severity: Caution - get it checked when you can

Throttle/Pedal Position Sensor/Switch A Circuit High Input

45 brands affected · Generic SAE J2012 description.

Key terms: Control module: a small computer that runs one part of the car · SAE J2012: the standard generic code list · Powertrain: engine, transmission and emissions

1What it means in plain English

The throttle position sensor signal is higher than the range the engine computer considers possible.

2Common causes

Faulty throttle position sensor
Damaged wiring or connector
Throttle body fault
Pedal position sensor fault
Engine control module fault

3Can I drive?

Caution · drive with care

Usually safe to drive gently. If the engine revs on its own or loses power, stop safely and have it checked.

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 45

Brand	Code	Description	System
Ashok Leyland CV	P0123	Seat Control Module.'F'. - Loss Or Error In Messages Brand	Powertrain
BAIC Motor	P0123	Throttle Position High Voltage Brand	Powertrain
Mercedes-Benz	P0123	Throttle/Pedal Position Sensor/Switch A Circuit High Input SAE	Powertrain
BMW	P0123	Signal above threshold Brand	Powertrain
BYD	P0123	TP sensor(main) high Brand	Powertrain
Chery	P0123	TP sensor(main) high Brand	Powertrain
Chrysler	P0123	TPS/APP Circuit High Brand	Powertrain
Daewoo	P0123	Throttle Position Sensor 1 Voltage High Brand	Powertrain
Daihatsu	P0123	Throttle motor disconnection Brand	Powertrain
DFFS	P0123	Motorized throttle track 1 signal failure Brand	Powertrain
DFFX	P0123	TP sensor(main) high Brand	Powertrain
DFXK	P0123	Throttle position high voltage short Brand	Powertrain
EOBD	P0123	Kiihdytinpoljin/asentoanturi/kytkin 'A' piiri korkea Brand	Powertrain
Fiat	P0123	TPS/APP Circuit high Brand	Powertrain
Ford	P0123	Throttle/Pedal Position Sensor/Switch A Circuit High Input SAE	Powertrain
Geely	P0123	TP sensor(main) high Brand	Powertrain
GM	P0123	Throttle position (TP) sensor circuit high voltage Brand	Powertrain
Great Wall	P0123	TP sensor(main) high Brand	Powertrain
Hafei	P0123	TP sensor(main) high Brand	Powertrain
Holden	P0123	Throttle Position Sensor Circuit High Voltage Brand	Powertrain
Honda	P0123	Throttle/Pedal Position Sensor/Switch A Circuit High Input SAE	Powertrain
Hyundai	P0123	Throttle/Pedal Position Sensor/Switch A Circuit High Input SAE	Powertrain
Isuzu	P0123	Throttle/Pedal Position Sensor/Switch A Circuit High Input SAE	Powertrain
Land Rover	P0123	Throttle/Pedal Position Sensor/Switch A Circuit High Input SAE	Powertrain
Mahindra	P0123	Throttle/Pedal Position Sensor/Switch A Circuit High Input SAE	Powertrain
Maserati	P0123	Throttle Position Sensor (TPS) 1 circuit high Brand	Powertrain
Mazda	P0123	Throttle/Pedal Position Sensor/Switch A Circuit High Input SAE	Powertrain
Mitsubishi	P0123	TPS(main) high Brand	Powertrain
Nissan	P0123	Throttle/Pedal Position Sensor/Switch A Circuit High Input SAE	Powertrain
Opel	P0123	Throttle position (TP) sensor circuit high voltage Brand	Powertrain
Perodua	P0123	Throttle motor disconnection Brand	Powertrain
Peugeot	P0123	Throttle/Pedal Position Sensor/Switch A Circuit High Input SAE	Powertrain
Porsche	P0123	Throttle/Pedal Position Sensor/Switch A Circuit High Input SAE	Powertrain
Proton	P0123	TPS(main) high Brand	Powertrain
Renault	P0123	Throttle/Pedal Position Sensor/Switch A Circuit High Input SAE	Powertrain
Saab	P0123	Throttle Position (TP) Sensor Circuit High Voltage Brand	Powertrain
MG (SAIC)	P0123	Throttle Potentiometer Input - Circuit fault Brand	Powertrain
Smart	P0123	Throttle/Pedal Position Sensor/Switch A Circuit High Input SAE	Powertrain
Sprinter	P0123	Throttle/Pedal Position Sensor/Switch A Circuit High Input SAE	Powertrain
Subaru	P0123	Throttle Position Sensor A High Input Brand	Powertrain
Suzuki	P0123	Throttle / Pedal Position Sensor / Switch 'A' Circuit High Brand	Powertrain
SWM Motor	P0123	TPS 1 signal short circuit to high voltage Brand	Powertrain
Tata	P0123	Throttle Position High Brand	Powertrain
Toyota	P0123	Electronic throttle position sensor 1 circuit high voltage Brand	Powertrain
Volkswagen	P0123	Throttle Position Sensor (G69): Signal too High 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 6

These 7-character codes are manufacturer-specific variants of P0123 and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	P012300	No description available	Powertrain
Hyundai	P012300	is set when the voltage abovemaximum output voltage of ACV - is detected for more than 0.1 sec. This code is due to short to battery or open in ACV circuit or ACV, ECM Brand	Powertrain
Porsche	P012300	No description available	Powertrain
Sprinter	P012300	No description available	Powertrain
SsangYong	P012300	Throttle/Pedal position sensor/switch 'A' circuit high input Brand	Powertrain
Volvo	P012300	The diagnostic trouble code (DTC) is only generated if any of the diagnostic trouble codes ECM-P012000, ECM-P012200 or ECM- have been detected Brand	Powertrain

6Related codes

Browse Pxxx codes or P012xx codes.