PowertrainP1234
CautionSeverity: Caution - get it checked when you can
Short circuit to ground
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 33
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P1234 | No description available | Powertrain |
| BAIC Motor | P1234 | Supercharger manifold boost pressure too high Brand | Powertrain |
| Mercedes-Benz | P1234 | No description available | Powertrain |
| BMW | P1234 | Short circuit to ground Brand | Powertrain |
| BYD | P1234 | TP sensor(sub) plausibility Brand | Powertrain |
| Chery | P1234 | TP sensor(sub) plausibility Brand | Powertrain |
| Daewoo | P1234 | Fuel Pump Driver Module Off Line Brand | Powertrain |
| Daihatsu | P1234 | High pressure system abnormal Brand | Powertrain |
| DFFS | P1234 | Booster (manifold) boost pressure too high Brand | Powertrain |
| DFFX | P1234 | TP sensor(sub) plausibility Brand | Powertrain |
| DFXK | P1234 | Booster (manifold) boost pressure too high Brand | Powertrain |
| EOBD | P1234 | CTP õpe Brand | Powertrain |
| Ford | P1234 | CMDTCs(Continuous Memory Diagnostic Trouble Codes) – 60 Brand | Powertrain |
| Geely | P1234 | TP sensor(sub) plausibility Brand | Powertrain |
| GM | P1234 | Fuel Pump Driver Module Off Line Brand | Powertrain |
| Great Wall | P1234 | TP sensor(sub) plausibility Brand | Powertrain |
| Hafei | P1234 | TP sensor(sub) plausibility Brand | Powertrain |
| Honda | P1234 | No description available | Powertrain |
| Isuzu | P1234 | No description available | Powertrain |
| Land Rover | P1234 | No description available | Powertrain |
| Mahindra | P1234 | No description available | Powertrain |
| Mazda | P1234 | CMDTCs(Continuous Memory Diagnostic Trouble Codes) – 60 Brand | Powertrain |
| Mitsubishi | P1234 | TPS(sub) plausibility Brand | Powertrain |
| Perodua | P1234 | High pressure system abnormal Brand | Powertrain |
| Peugeot | P1234 | No description available | Powertrain |
| Proton | P1234 | TPS(sub) plausibility Brand | Powertrain |
| Saab | P1234 | Fuel Pump Driver Module Off Line Brand | Powertrain |
| Smart | P1234 | No description available | Powertrain |
| Sprinter | P1234 | ENV_ _Datum3 Brand | Powertrain |
| Subaru | P1234 | No description available | Powertrain |
| Suzuki | P1234 | CTP LEARNING-B2 Brand | Powertrain |
| Tata | P1234 | No description available | Powertrain |
| Toyota | P1234 | Booster (manifold) boost pressure 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 8
These 7-character codes are manufacturer-specific variants of P1234 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Mazda | P123400 | No description available | Powertrain |
| SsangYong | P123400 | VGT operation fault(high) Brand | Powertrain |
| Volkswagen | P123400 | A DTC code can be entered: e.g Brand | Powertrain |
| SsangYong | P123402 | Safety: main contactor off request detection (interlock error) Brand | Powertrain |
| Mercedes-Benz | P123456 | Sensoralignment-Prozedur nicht durchgeführt. Brand | Powertrain |
| Mercedes-Benz | P123457 | Communication with CPC has a malfunction. Brand | Powertrain |
| Mercedes-Benz | P123458 | Communication with CPC has a malfunction. Brand | Powertrain |
| Mercedes-Benz | P123459 | Communication with EIS has a malfunction. Brand | Powertrain |
6Related codes
Browse Pxxx codes or P123xx codes.