VOLVO
ECM-P268312 - Engine Coolant Bypass Valve "A" Control Circuit High. General Electrical Failures. Circuit short to battery
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
6 modelsS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V70 (2008–)
Show models by year and engine (11)
- Volvo S60 (2011–)2011Engine B4164T, B4164T3 only
- Volvo S60 (2011–)2012–2015Engine B4164T, B4164T2, B4164T3 only
- Volvo S80 (2007–)2011, 2015Engine B4164T only
- Volvo S80 (2007–)2012–2014Engine B4164T, B4164T2 only
- Volvo V40 (2013–)2013Engine B4164T, B4164T3 only
- Volvo V40 (2013–)2014–2015Engine B4164T, B4164T3, B4164T4 only
- Volvo V40 Cross Country (2013–)2013–2015Engine B4164T only
- Volvo V60 (2011–)2011Engine B4164T, B4164T3 only
- Volvo V60 (2011–)2012–2015Engine B4164T, B4164T2, B4164T3 only
- Volvo V70 (2008–)2011Engine B4164T only
- Volvo V70 (2008–)2012–2015Engine B4164T, B4164T2 only
What does this fault code mean?
The engine control module (ECM) drives a solenoid for the bypass valve. The code is set when the signal is too high or too low as the solenoid is activated. Even though the code is named high, a low signal can also trigger it.
Possible causes
- The signal wire is shorted to supply voltage
- Damaged solenoid
- Damaged connector
- Damaged engine control module (ECM)
What you can do
- 1Check that the fuse supplying the solenoid is intact
- 2Use a multimeter to check that the signal wire to the solenoid has no contact with the positive supply
- 3Check the connector at the solenoid for damage and loose contacts
- 4If nothing is found, have a workshop decide whether the solenoid or the engine control module is damaged
Symptoms you may notice1
- No noticeable symptoms for the driver
General guidance for car owners. Diagnosis on the car can point to a different cause.