PowertrainP1204
CautionSeverity: Caution - get it checked when you can
Signal at full load below threshold
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 28
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P1204 | No description available | Powertrain |
| BAIC Motor | P1204 | TCU reset fault Brand | Powertrain |
| BMW | P1204 | Signal at full load below threshold Brand | Powertrain |
| BYD | P1204 | Injector charge problem Brand | Powertrain |
| Chery | P1204 | B phase overcurrent Brand | Powertrain |
| Daewoo | P1204 | Cylinder #4 Injector Circ Open/Shorted Brand | Powertrain |
| DFFS | P1204 | No description available | Powertrain |
| DFFX | P1204 | Injector charge problem Brand | Powertrain |
| DFXK | P1204 | Cylinder 4 injection signal fault Brand | Powertrain |
| EOBD | P1204 | Injektor valja 4 Brand | Powertrain |
| Geely | P1204 | CNG Nozzle 4 Fault Brand | Powertrain |
| GM | P1204 | Cylinder #4 Injector Circ Open/Shorted Brand | Powertrain |
| Great Wall | P1204 | Injector charge problem Brand | Powertrain |
| Hafei | P1204 | Injector charge problem Brand | Powertrain |
| Holden | P1204 | Cylinder 4 Alternative Fuel Injector Control Circuit Brand | Powertrain |
| Honda | P1204 | No description available | Powertrain |
| Hyundai | P1204 | No description available | Powertrain |
| Isuzu | P1204 | No description available | Powertrain |
| Land Rover | P1204 | Injection circuit open/shorted - cylinder 4 Brand | Powertrain |
| Mahindra | P1204 | No description available | Powertrain |
| Mitsubishi | P1204 | Injector charge problem Brand | Powertrain |
| Opel | P1204 | Cylinder #4 Injector Circ Open/Shorted Brand | Powertrain |
| Peugeot | P1204 | No description available | Powertrain |
| Porsche | P1204 | No description available | Powertrain |
| Proton | P1204 | Injector charge problem Brand | Powertrain |
| Saab | P1204 | Cylinder #4 Injector Circ Open/Shorted Brand | Powertrain |
| Suzuki | P1204 | Injector Circuit / Open - Cylinder4 (Injector No.4-2) Brand | Powertrain |
| Tata | P1204 | Cylinder 3 Injector - Short Circuit 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 4
These 7-character codes are manufacturer-specific variants of P1204 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Mercedes-Benz | P120400 | ALD; Lastabfallfehler an der PWM-Ausgangsendstufe Brand | Powertrain |
| Sprinter | P120400 | ALD; Lastabfallfehler an der PWM-Ausgangsendstufe Brand | Powertrain |
| SsangYong | P120400 | Motor Control Unit (MCU): 3-phase current overcurrent hardware detection (critical) Brand | Powertrain |
| SsangYong | P120401 | Vehicle speed signal error (central gateway variant coding error) Brand | Powertrain |
6Related codes
Browse Pxxx codes or P120xx codes.