VOLVO
ECM-P012800 - Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature). General Failure Information. No sub type information
System
Engine Control Module (ECM)
Volvo models this fault code applies to
This fault code has different meanings depending on model, model year or engine. Select the meaning that applies to your car.
Applies to the following models:
10 modelsS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–), XC90 (2003–)
Show models by year and engine (39)
- Volvo S60 (2011–)2011–2012Engine B5254T5, B6304T4 only
- Volvo S60 (2011–)2013Engine B5204T8, B5204T9, B5254T12, B5254T14, B6304T4 only
- Volvo S60 (2011–)2014Engine B4204T10, B4204T11, B4204T12, B4204T15, B4204T9, B5204T8, B5204T9, B5254T12, B5254T14, B6304T4 only
- Volvo S60 (2011–)2015All engines except: B4164T, B4164T2, B4164T3, D4162T, D4204T5, D5204T3, D5204T7, D5244T11, D5244T15, D5244T23
- Volvo S80 (2007–)2007Engine B6324S, B8444S only
- Volvo S80 (2007–)2008–2009Engine B6304T2, B6324S, B8444S only
- Volvo S80 (2007–)2010Engine B6304T2, B6324S, B6324S2, B8444S only
- Volvo S80 (2007–)2011Engine B6304T4, B6324S4, B6324S5, B8444S only
- Volvo S80 (2007–)2012Engine B6304T4, B6324S4, B6324S5 only
- Volvo S80 (2007–)2013Engine B5254T12, B5254T14, B6304T4, B6324S4, B6324S5 only
- Volvo S80 (2007–)2014Engine B4204T11, B4204T12, B4204T15, B5254T12, B5254T14, B6304T4, B6324S4, B6324S5 only
- Volvo S80 (2007–)2015All engines except: B4164T, D4162T, D4204T5, D5204T3, D5244T15
- Volvo V40 (2013–)2013–2014Engine B5204T8, B5204T9, B5254T12, B5254T14 only
- Volvo V40 (2013–)2015Engine B4204T11, B5204T8, B5204T9 only
- Volvo V40 Cross Country (2013–)2013–2014Engine B5204T8, B5204T9, B5254T12, B5254T14 only
- Volvo V40 Cross Country (2013–)2015All engines except: B4164T, D4162T, D4204T14, D5204T6
- Volvo V60 (2011–)2011–2012Engine B6304T4 only
- Volvo V60 (2011–)2013Engine B5204T8, B5204T9, B6304T4 only
- Volvo V60 (2011–)2014Engine B4204T11, B4204T12, B4204T15, B4204T9, B5204T8, B5204T9, B5254T12, B6304T4 only
- Volvo V60 (2011–)2015Engine B4204T11, B4204T12, B4204T15, B4204T9, B5204T9, B5254T12, B6304T3, B6304T4, B6304T5 only
- Volvo V60 Cross Country (2015–)2015
- Volvo V70 (2008–)2008–2009Engine B6304T2, B6324S only
- Volvo V70 (2008–)2010Engine B6304T2, B6324S, B6324S2 only
- Volvo V70 (2008–)2011–2012Engine B6304T4, B6324S5 only
- Volvo V70 (2008–)2013Engine B5204T9, B6304T4, B6324S5 only
- Volvo V70 (2008–)2014Engine B4204T11, B5204T9, B6304T4, B6324S5 only
- Volvo V70 (2008–)2015Engine B4204T11, B5204T9, B6304T4 only
- Volvo XC60 (2009–)2009Engine B6304T2 only
- Volvo XC60 (2009–)2010Engine B6304T2, B6324S, B6324S2 only
- Volvo XC60 (2009–)2011–2013Engine B6304T4, B6324S4, B6324S5 only
- Volvo XC60 (2009–)2014Engine B4204T10, B4204T11, B4204T12, B4204T15, B4204T9, B6304T4, B6324S4, B6324S5 only
- Volvo XC60 (2009–)2015All engines except: B4204T7, D4204T5, D5204T3, D5204T7, D5244T11, D5244T12, D5244T15, D5244T17, D5244T23
- Volvo XC70 (2008–)2008Engine B6324S only
- Volvo XC70 (2008–)2009Engine B6304T2, B6324S only
- Volvo XC70 (2008–)2010Engine B6304T2, B6324S, B6324S2 only
- Volvo XC70 (2008–)2011–2013Engine B6304T4, B6324S4, B6324S5 only
- Volvo XC70 (2008–)2014–2015Engine B4204T11, B6304T4, B6324S4, B6324S5 only
- Volvo XC90 (2003–)2007–2010Engine B6324S only
- Volvo XC90 (2003–)2011–2014Engine B6324S5 only
What does this fault code mean?
During warm-up the control module compares how fast the temperature rises with the expected rise. If the temperature deviates too much from the calculated value, the fault code is set, and the thermostat or the sensor may be the cause.
Possible causes
- Damaged thermostat
- Contact resistance and oxidation in the wiring and connections to the engine temperature sensor
- Damaged engine temperature sensor
- Damaged coolant temperature sensor
What you can do
- 1Read the fault code status with the ignition on and check whether the fault is active. Then clear the code and road test the vehicle
- 2Check the wiring and plugs between the control module and the engine temperature sensor for poor contact or corrosion
- 3If you have a diagnostic tool: read the coolant temperature in live data during warm-up. An unreasonable value indicates a permanent fault
- 4If the connectors are in order and the fault remains, have a workshop check and replace the thermostat if needed
Symptoms you may notice4
- The emissions warning lamp is lit
- The engine does not get properly warm
- The front heater warms up slowly or not enough
- The Check engine light comes on or behaves abnormally
General guidance for car owners. Diagnosis on the car can point to a different cause.