PowertrainP05FF
CautionSeverity: Caution - get it checked when you can
Built-in System Interface (BSI) internal fault (reset the Built-in System Interface)
Key terms: Powertrain: engine, transmission and emissions
1What it means in plain English
This range covers vehicle speed, idle and oil-pressure control, charging-system voltage, and brake-switch circuits.
2Common causes
- Carbon build-up in the throttle body
- Faulty idle air control valve
- Faulty vehicle speed sensor
- Faulty charging system or weak battery
- Wiring or connector fault
3Can I drive?
Codes in this range include oil-pressure, brake-switch and charging-system voltage faults. If the oil-pressure warning light is on, stop the engine as soon as it is safe and do not drive until it is diagnosed. If the battery or charging warning light is on, drive straight to a workshop: the car can stall when the battery runs flat. For any other P05 code, have the car diagnosed promptly rather than continuing to drive.
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 14
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P05FF | No description available | Powertrain |
| Mercedes-Benz | P05FF | No description available | Powertrain |
| Daewoo | P05FF | No description available | Powertrain |
| DFFS | P05FF | Built-in System Interface (BSI) internal fault Brand | Powertrain |
| EOBD | P05FF | Jarrupaineanturi / jarrupoljinanturi -korrelaatio Brand | Powertrain |
| GM | P05FF | No description available | Powertrain |
| Holden | P05FF | Brake Pressure - Brake Pedal Position Not Plausible Brand | Powertrain |
| Isuzu | P05FF | No description available | Powertrain |
| Land Rover | P05FF | No description available | Powertrain |
| Opel | P05FF | No description available | Powertrain |
| Peugeot | P05FF | No description available | Powertrain |
| Saab | P05FF | No description available | Powertrain |
| Suzuki | P05FF | No description available | Powertrain |
| Toyota | P05FF | Built-in System Interface (BSI) internal fault (reset the Built-in System Interface) 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 2
These 7-character codes are manufacturer-specific variants of P05FF and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Mercedes-Benz | P05FF04 | The relationship between the brake pressure and brake pedal travel is implausible. There is an internal fault. Brand | Powertrain |
| Mercedes-Benz | P05FF06 | The relationship between the brake pressure and brake pedal travel is implausible. There is an algorithm fault. Brand | Powertrain |
6Related codes
Browse Pxxx codes or P05Fxx codes.