PowertrainP1656
CautionSeverity: Caution - get it checked when you can
CAN link PCM/PCM circuit/network
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 29
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P1656 | No description available | Powertrain |
| Mercedes-Benz | P1656 | No description available | Powertrain |
| BYD | P1656 | Gear R gear hardware failure Brand | Powertrain |
| Chery | P1656 | Throttle self-learning: condition related Brand | Powertrain |
| Daewoo | P1656 | Driver 2 Line 6 Brand | Powertrain |
| Daihatsu | P1656 | OCV system Brand | Powertrain |
| DFFS | P1656 | Engine operating status information failure Brand | Powertrain |
| DFXK | P1656 | A/C System Input Output Short to Ground Brand | Powertrain |
| EOBD | P1656 | Juht 2 liin 6 Brand | Powertrain |
| Geely | P1656 | Immobilizer Authentication Failed Brand | Powertrain |
| GM | P1656 | Driver 2 Line 6 Brand | Powertrain |
| Great Wall | P1656 | Immobilizer authentication request error Brand | Powertrain |
| Holden | P1656 | Engine Speed Output Circuit Low Voltage Brand | Powertrain |
| Honda | P1656 | No description available | Powertrain |
| Isuzu | P1656 | No description available | Powertrain |
| Land Rover | P1656 | No description available | Powertrain |
| Mahindra | P1656 | No description available | Powertrain |
| Mitsubishi | P1656 | Engine run signal circuit high Brand | Powertrain |
| Nissan | P1656 | No description available | Powertrain |
| Opel | P1656 | Driver 2 Line 6 Brand | Powertrain |
| Perodua | P1656 | OCV system Brand | Powertrain |
| Peugeot | P1656 | No description available | Powertrain |
| Porsche | P1656 | No description available | Powertrain |
| Proton | P1656 | Engine run signal circuit high Brand | Powertrain |
| Saab | P1656 | Driver 2 Line 6 Brand | Powertrain |
| Sprinter | P1656 | No description available | Powertrain |
| Tata | P1656 | Check Engine Lamp Fault Brand | Powertrain |
| Toyota | P1656 | CAN link PCM/PCM circuit/network Brand | Powertrain |
| Volkswagen | P1656 | A/C system input/output: short to ground; Open circuit 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.
5Related codes
Browse Pxxx codes or P165xx codes.