VOLVO
ECM-P011812 - Engine Coolant Temperature Sensor 1 Circuit High. General Electrical Failures. Circuit short to battery or open
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
7 modelsS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V70 (2008–), XC60 (2009–)
Show models by year and engine (20)
- Volvo S60 (2011–)2011Engine B4164T, B4164T3, B4204T6, B4204T7 only
- Volvo S60 (2011–)2012–2014Engine B4164T, B4164T2, B4164T3, B4204T7 only
- Volvo S60 (2011–)2015Engine B4164T, B4164T2, B4164T3 only
- Volvo S80 (2007–)2010Engine B4204T6 only
- Volvo S80 (2007–)2011Engine B4164T, B4204T6, B4204T7 only
- Volvo S80 (2007–)2012–2014Engine B4164T, B4164T2, B4204T6, B4204T7 only
- Volvo S80 (2007–)2015Engine B4164T 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, B4204T6, B4204T7 only
- Volvo V60 (2011–)2012–2014Engine B4164T, B4164T2, B4164T3, B4204T7 only
- Volvo V60 (2011–)2015Engine B4164T, B4164T2, B4164T3 only
- Volvo V70 (2008–)2010Engine B4204T6 only
- Volvo V70 (2008–)2011Engine B4164T, B4204T6, B4204T7 only
- Volvo V70 (2008–)2012–2014Engine B4164T, B4164T2, B4204T7 only
- Volvo V70 (2008–)2015Engine B4164T, B4164T2 only
- Volvo XC60 (2009–)2010Engine B4204T6 only
- Volvo XC60 (2009–)2011–2012Engine B4204T6, B4204T7 only
- Volvo XC60 (2009–)2013–2015Engine B4204T7 only
What does this fault code mean?
The control module checks the engine temperature signal. The fault code is set when the signal corresponds to a temperature lower than a certain value, which can be caused by a circuit shorted to battery voltage or an open circuit.
Possible causes
- Contact resistance and oxidation in the connections
- Damaged temperature sensor
What you can do
- 1Read the diagnostic and fault status for the code with the ignition on. Clear the code and road test the vehicle to see whether it returns
- 2Check the connector at the coolant temperature sensor for contact resistance and oxidation
- 3With the connector unplugged, use a multimeter to check that the signal cable is not short-circuited to positive and has no open circuit
- 4Take care working in the engine bay, as the electric cooling fan can run even when the ignition is off
- 5If the connector and wiring are in order and the fault remains, have a workshop check or replace the coolant temperature sensor
Symptoms you may notice2
- The Check engine light comes on or behaves abnormally
- The engine does not start
What the fault can affect3
- The engine temperature is calculated using a model
- The catalyst warm-up is switched off at start-up
- The electric cooling fan runs at a predefined speed
General guidance for car owners. Diagnosis on the car can point to a different cause.