VOLVO
ECM-P268100 - Engine Coolant Bypass Valve "A" Control Circuit/Open. General Electrical Failures. No sub type information
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
8 modelsS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V70 (2008–), XC60 (2009–), XC70 (2008–)
Show models by year and engine (8)
- Volvo S60 (2011–)2014–2015Engine D4204T5 only
- Volvo S80 (2007–)2014–2015Engine D4204T5 only
- Volvo V40 (2013–)2015Engine D4204T14 only
- Volvo V40 Cross Country (2013–)2015Engine D4204T14 only
- Volvo V60 (2011–)2014–2015Engine D4204T5 only
- Volvo V70 (2008–)2014–2015Engine D4204T5 only
- Volvo XC60 (2009–)2014–2015Engine D4204T5 only
- Volvo XC70 (2008–)2014–2015Engine D4204T5 only
What does this fault code mean?
The ECM keeps an eye on the cooling valves and works them electrically through a vacuum device. The valves limit the coolant volume near the engine so that the engine warms up faster and heat reaches the cabin sooner. Even though the code is named bypass valve, the open circuit concerns the connection to the coolant pump relay.
Possible causes
- Loose connection or oxidation in the connector
- Open circuit on the signal wire
What you can do
- 1Check the connector at the coolant pump relay for loose connections and oxidation
- 2Follow the signal wire between the engine control module and the coolant pump relay and look for a break with a multimeter
- 3Check the fuses for the coolant pump and the relay
- 4With a diagnostic tool you can test the coolant pump by activating it
- 5If nothing is found, have a workshop decide whether the fault lies in the relay or the engine control module
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.