PowertrainP2123
CautionSeverity: Caution - get it checked when you can
Short circuit to positive
Key terms: Control module: a small computer that runs one part of the car · Powertrain: engine, transmission and emissions
1What it means in plain English
The engine or powertrain control system has stored a fault that does not have specific guidance in this database yet.
2Common causes
- Sensor or actuator fault
- Wiring or connector fault
- Vacuum or intake leak
- Fuel or ignition problem
- Control module fault
3Can I drive?
Have it diagnosed promptly. If the car runs and drives normally, drive gently to a workshop. If it runs badly, stalls, overheats, loses oil pressure, or a warning light is flashing or red, stop safely and get professional help. If the code concerns the brakes, brake vacuum or brake assist, do not drive until it is checked: a hard pedal or longer stopping distance means stop.
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 42
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P2123 | No description available | Powertrain |
| BAIC Motor | P2123 | PPS1 signal circuit short to high voltage Brand | Powertrain |
| Mercedes-Benz | P2123 | No description available | Powertrain |
| BMW | P2123 | Short circuit to positive Brand | Powertrain |
| BYD | P2123 | APP sensor(main) high Brand | Powertrain |
| Chery | P2123 | APP sensor(main) high Brand | Powertrain |
| Daewoo | P2123 | Accelerator Pedal Position Sensor 1 High Input Brand | Powertrain |
| Daihatsu | P2123 | Accelerator sensor 1 error Brand | Powertrain |
| DFFS | P2123 | Accelerator pedal position sensor failure Brand | Powertrain |
| DFFX | P2123 | APP sensor(main) high Brand | Powertrain |
| DFXK | P2123 | Throttle/Pedal Position Sensor/Switch D Circuit High Brand | Powertrain |
| EOBD | P2123 | Gas-/pedalpositionsensor/brytare 'D'-krets hög Brand | Powertrain |
| Ford | P2123 | No description available | Powertrain |
| Geely | P2123 | APP sensor(main) high Brand | Powertrain |
| GM | P2123 | Throttle/Pedal Position Sensor/Switch D Circuit High Brand | Powertrain |
| Great Wall | P2123 | APP sensor(main) high Brand | Powertrain |
| Hafei | P2123 | APP sensor(main) high Brand | Powertrain |
| Holden | P2123 | Throttle Position Sensor 2 Circuit High Voltage Brand | Powertrain |
| Honda | P2123 | No description available | Powertrain |
| Hyundai | P2123 | No description available | Powertrain |
| Isuzu | P2123 | No description available | Powertrain |
| Land Rover | P2123 | Pedal position sensor 1 - High input Brand | Powertrain |
| Mahindra | P2123 | No description available | Powertrain |
| Maserati | P2123 | Accelerator Pedal Position (APP) sensor 1 circuit high Brand | Powertrain |
| Mazda | P2123 | No description available | Powertrain |
| Mitsubishi | P2123 | APS(sub) high Brand | Powertrain |
| Nissan | P2123 | No description available | Powertrain |
| Opel | P2123 | Throttle/Pedal Position Sensor/Switch D Circuit High Brand | Powertrain |
| Perodua | P2123 | Accelerator sensor 1 error Brand | Powertrain |
| Peugeot | P2123 | No description available | Powertrain |
| Porsche | P2123 | No description available | Powertrain |
| Proton | P2123 | APS(sub) high Brand | Powertrain |
| Saab | P2123 | Throttle/Pedal Position Sensor/Switch D Circuit High Brand | Powertrain |
| MG (SAIC) | P2123 | Throttle/Pedal Position Sensor/Switch D Circuit High Brand | Powertrain |
| Smart | P2123 | No description available | Powertrain |
| Sprinter | P2123 | No description available | Powertrain |
| Subaru | P2123 | Accelerator Position Sensor D High Input Brand | Powertrain |
| Suzuki | P2123 | Throttle/pedal position sensor/switch 'D' (main) circuit high input Brand | Powertrain |
| SWM Motor | P2123 | PPS1 signal short circuit to high voltage Brand | Powertrain |
| Tata | P2123 | Accelerator Pedal Position Sensor D High Brand | Powertrain |
| Toyota | P2123 | Electronic accelerator pedal position sensor 1 circuit voltage high Brand | Powertrain |
| Volkswagen | P2123 | Accelerator position sensor (G79): signal too high; Defective 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 5
These 7-character codes are manufacturer-specific variants of P2123 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Mercedes-Benz | P212300 | Der Positionssensor 1 des Fahrpedals hat Kurzschluss nach Plus. Brand | Powertrain |
| Hyundai | P212300 | PCM sets DTC if the PCM detects output voltage higher than the possible range of a properly operating APS1 Brand | Powertrain |
| SsangYong | P212300 | Accelerator pedal position sensor 1 circuit short to battery (+) Brand | Powertrain |
| Mercedes-Benz | P212312 | Der Positionssensor 1 des Fahrpedals hat Kurzschluss nach Plus.Es liegt ein Kurzschluss nach Plus vor. Brand | Powertrain |
| Mercedes-Benz | P212341 | Der Positionssensor 1 des Fahrpedals hat Kurzschluss nach Plus. Es liegt ein allgemeiner Prüfsummenfehler vor. Brand | Powertrain |
6Related codes
Browse Pxxx codes or P212xx codes.