PowertrainP2678
CautionSeverity: Caution - get it checked when you can
Coolant degassing valve control circuit/open
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?
Watch the temperature gauge. Stop safely and let the engine cool if the gauge climbs, steam appears, or a red warning light comes on.
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 20
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P2678 | No description available | Powertrain |
| BAIC Motor | P2678 | Coolant Degassing Valve Control Circuit/Open Brand | Powertrain |
| BYD | P2678 | Coolant Degassing Valve Control Circuit/Open Brand | Powertrain |
| Chery | P2678 | Coolant Degassing Valve Control Circuit/Open Brand | Powertrain |
| Daewoo | P2678 | Coolant Degassing Valve Control Circuit/Open Brand | Powertrain |
| DFFS | P2678 | Coolant Degassing Valve Control Circuit/Open Brand | Powertrain |
| DFFX | P2678 | Coolant Degassing Valve Control Circuit/Open Brand | Powertrain |
| DFXK | P2678 | Coolant Degassing Valve Control Circuit/Open Brand | Powertrain |
| EOBD | P2678 | Coolant degassing valve control circuit/open Brand | Powertrain |
| Geely | P2678 | Coolant Degassing Valve Control Circuit/Open Brand | Powertrain |
| GM | P2678 | Coolant Degassing Valve Control Circuit/Open Brand | Powertrain |
| Great Wall | P2678 | Coolant Degassing Valve Control Circuit/Open Brand | Powertrain |
| Hafei | P2678 | Coolant Degassing Valve Control Circuit/Open Brand | Powertrain |
| Hyundai | P2678 | No description available | Powertrain |
| Land Rover | P2678 | Coolant degassing valve control - circuit open Brand | Powertrain |
| Nissan | P2678 | No description available | Powertrain |
| Peugeot | P2678 | No description available | Powertrain |
| Saab | P2678 | Coolant Degassing Valve Control Circuit/Open Brand | Powertrain |
| MG (SAIC) | P2678 | Coolant Degassing Valve Control Circuit/Open Brand | Powertrain |
| Toyota | P2678 | Coolant degassing valve control circuit/open 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 P267xx codes.