PowertrainP1804
CautionSeverity: Caution - get it checked when you can
Short circuit to negative
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 25
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P1804 | Proportional Valve. STOP Valve. Short Circuit To Ground Brand | Powertrain |
| BAIC Motor | P1804 | Controllers initialization fault Brand | Powertrain |
| Mercedes-Benz | P1804 | No description available | Powertrain |
| BMW | P1804 | Short circuit to negative Brand | Powertrain |
| Chery | P1804 | Security limit function - incorrect clutch engagement Brand | Powertrain |
| Daewoo | P1804 | Ground Control Relay Brand | Powertrain |
| DFXK | P1804 | Motor overtemperature fault: level 3 Brand | Powertrain |
| EOBD | P1804 | Laaddruksensor Brand | Powertrain |
| Ford | P1804 | No description available | Powertrain |
| Geely | P1804 | Hydraulic Actuator Position Sensor (G302): Electrical Malfunction in Circuit Brand | Powertrain |
| GM | P1804 | Ground Control Relay Brand | Powertrain |
| Holden | P1804 | 5V Reference 2 Circuit Status Brand | Powertrain |
| Land Rover | P1804 | Four-wheel drive high indicator circuit failure Brand | Powertrain |
| Mahindra | P1804 | No description available | Powertrain |
| Mazda | P1804 | No description available | Powertrain |
| Mitsubishi | P1804 | Shift fork sensor1&2 LO voltage Brand | Powertrain |
| Opel | P1804 | Ground Control Relay Brand | Powertrain |
| Peugeot | P1804 | No description available | Powertrain |
| Porsche | P1804 | Tipptasteninformation von Lenkrad unplausibel Brand | Powertrain |
| Proton | P1804 | Shift fork sensor1&2 LO voltage Brand | Powertrain |
| Saab | P1804 | Ground Control Relay Brand | Powertrain |
| MG (SAIC) | P1804 | 5V2 Sensor Voltage Supply Circuit wiring Short to GND Brand | Powertrain |
| Smart | P1804 | Ereignisstatus Brand | Powertrain |
| Suzuki | P1804 | CONTROL UNIT 3 Brand | Powertrain |
| Tata | P1804 | No description available | 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 3
These 7-character codes are manufacturer-specific variants of P1804 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Mercedes-Benz | P180400 | No description available | Powertrain |
| Sprinter | P180400 | No description available | Powertrain |
| SsangYong | P180400 | Solenoid open circuit Brand | Powertrain |
6Related codes
Browse Pxxx codes or P180xx codes.