PowertrainP28C7
CautionSeverity: Caution - get it checked when you can
Clutch motor phase drive performance failure
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 10
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P28C7 | No description available | Powertrain |
| Daewoo | P28C7 | No description available | Powertrain |
| DFFS | P28C7 | Clutch motor phase drive performance failure Brand | Powertrain |
| EOBD | P28C7 | Kobling 'A' motorfase U-V-W ytelse Brand | Powertrain |
| GM | P28C7 | No description available | Powertrain |
| Holden | P28C7 | Odd Gear Clutch Motor Phase U-V-W Control Circuit Performance Brand | Powertrain |
| Land Rover | P28C7 | No description available | Powertrain |
| Opel | P28C7 | No description available | Powertrain |
| Peugeot | P28C7 | No description available | Powertrain |
| Saab | P28C7 | 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 7
These 7-character codes are manufacturer-specific variants of P28C7 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Mercedes-Benz | P28C702 | Cluth actuator bridge driver SPI communication error detected. Brand | Powertrain |
| Mercedes-Benz | P28C709 | Phases U-V-W of clutch actuator 1 have a malfunction. There is a component fault. Brand | Powertrain |
| Mercedes-Benz | P28C713 | Cluth control actuator phase open circut Brand | Powertrain |
| Mercedes-Benz | P28C716 | Phases U-V-W of clutch actuator 1 have a malfunction. The limit value for electrical voltage has not been attained. Brand | Powertrain |
| Mercedes-Benz | P28C764 | Cluth actuator phase current plausibility fault Brand | Powertrain |
| Mercedes-Benz | P28C777 | Phases U-V-W of clutch actuator 1 have a malfunction. The commanded position cannot be reached. Brand | Powertrain |
| Mercedes-Benz | P28C7A2 | Phases U-V-W of clutch actuator 1 have a malfunction. The system voltage is too low. Brand | Powertrain |
6Related codes
Browse Pxxx codes or P28Cxx codes.