PowertrainP1854
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 19
| Brand | Code | Description | System |
|---|---|---|---|
| BMW | P1854 | Short circuit to negative Brand | Powertrain |
| Chery | P1854 | ECU internal fault Brand | Powertrain |
| Daewoo | P1854 | Data-Bus Powertrain Hardware Defective Brand | Powertrain |
| DFXK | P1854 | Powertrain Data Bus: Hardware Malfunction Brand | Powertrain |
| EOBD | P1854 | CAN-styrenhet buss av Brand | Powertrain |
| Ford | P1854 | No description available | Powertrain |
| Geely | P1854 | Powertrain Data Bus: Hardware Malfunction Brand | Powertrain |
| GM | P1854 | Data-Bus Powertrain Hardware Defective Brand | Powertrain |
| Holden | P1854 | No description available | Powertrain |
| Land Rover | P1854 | Transfer case contact plate C circuit failure Brand | Powertrain |
| Mazda | P1854 | No description available | Powertrain |
| Peugeot | P1854 | No description available | Powertrain |
| Porsche | P1854 | CAN Controler Bus-Off Brand | Powertrain |
| Saab | P1854 | Data-Bus Powertrain Hardware Defective Brand | Powertrain |
| MG (SAIC) | P1854 | Short to Ground for Position encoder 4 Brand | Powertrain |
| Subaru | P1854 | No description available | Powertrain |
| Suzuki | P1854 | TCM Internal Supply Voltage 'A' Low Brand | Powertrain |
| Toyota | P1854 | Data bus powertrain hardware defective Brand | Powertrain |
| Volkswagen | P1854 | Drive train data bus 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 3
These 7-character codes are manufacturer-specific variants of P1854 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Mercedes-Benz | P185400 | BstCtlHPTrbBypStk: Error case for HP turbine bypass valve stuck condition Brand | Powertrain |
| Sprinter | P185400 | BstCtlHPTrbBypStk: Error case for HP turbine bypass valve stuck condition Brand | Powertrain |
| SsangYong | P185400 | Short to ground for position encoder 4 Brand | Powertrain |
6Related codes
Browse Pxxx codes or P185xx codes.