PowertrainP0CF8
CautionSeverity: Caution - get it checked when you can
ECU power failure (CAN positive)
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 6
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P0CF8 | No description available | Powertrain |
| DFFS | P0CF8 | ECU power failure Brand | Powertrain |
| EOBD | P0CF8 | Kontrollpilotladebryter 'A' krets/åpen Brand | Powertrain |
| Isuzu | P0CF8 | No description available | Powertrain |
| Land Rover | P0CF8 | Control Pilot Charging Switch Circuit/Open Brand | Powertrain |
| Toyota | P0CF8 | ECU power failure (CAN positive) 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 9
These 7-character codes are manufacturer-specific variants of P0CF8 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Mercedes-Benz | P0CF803 | The internal switch for starting the charging process of the on-board charger has an electrical fault or an open circuit. There is a frequency or pulse width modulation fault. Brand | Powertrain |
| Mercedes-Benz | P0CF811 | The internal switch for starting the charging process of the on-board charger has an electrical fault or an open circuit. There is a short circuit to ground. Brand | Powertrain |
| Mercedes-Benz | P0CF812 | The internal switch for starting the charging process of the on-board charger has an electrical fault or an open circuit. There is a short circuit to positive. Brand | Powertrain |
| Mercedes-Benz | P0CF816 | The internal switch for starting the charging process of the on-board charger has an electrical fault or an open circuit. The limit value for electrical voltage has not been attained. Brand | Powertrain |
| Mercedes-Benz | P0CF817 | The internal switch for starting the charging process of the on-board charger has an electrical fault or an open circuit. The limit value for electrical voltage has been exceeded. Brand | Powertrain |
| Mercedes-Benz | P0CF838 | The internal switch for starting the charging process of the on-board charger has an electrical fault or an open circuit. There is an incorrect signal frequency. Brand | Powertrain |
| Mercedes-Benz | P0CF862 | The internal switch for starting the charging process of the on-board charger has an electrical fault or an open circuit. The signal comparison is faulty. Brand | Powertrain |
| Mercedes-Benz | P0CF864 | The internal switch for starting the charging process of the on-board charger has an electrical fault or an open circuit. There is an implausible signal. Brand | Powertrain |
| Mercedes-Benz | P0CF866 | The internal switch for starting the charging process of the on-board charger has an electrical fault or an open circuit. The signal has too many transitions or events. Brand | Powertrain |
6Related codes
Browse Pxxx codes or P0CFxx codes.