VOLVO
ECM-0116 - Engine coolant temperature (ECT) sensor. Faulty signal
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:
4 modelsC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Show models by year and engine (10)
- Volvo C30 (2007–2013)2007Engine D4204T only
- Volvo C30 (2007–2013)2008–2010Engine D4204T only · Transmission MMT6, MPS6 only
- Volvo C70 (2006–2013)2008Engine D4204T only
- Volvo C70 (2006–2013)2009–2010Engine D4204T only · Transmission MMT6, MPS6 only
- Volvo S40 (2004–2013)2004–2006Engine D4204T, D4204T2 only
- Volvo S40 (2004–2013)2007Engine D4204T only
- Volvo S40 (2004–2013)2008–2010Engine D4204T only · Transmission MMT6, MPS6 only
- Volvo V50 (2004–2013)2004–2006Engine D4204T, D4204T2 only
- Volvo V50 (2004–2013)2007Engine D4204T only
- Volvo V50 (2004–2013)2008–2010Engine D4204T only · Transmission MMT6, MPS6 only
What does this fault code mean?
The engine control module has registered that the signal from the coolant temperature sensor is faulty or unreasonable. The cause is most often poor contact at the connections, but the sensor may also be damaged.
Possible causes
- Contact resistance in the connections
- Damaged engine coolant temperature sensor
What you can do
- 1With the ignition off, check the connectors to the coolant temperature sensor and the control module for contact resistance and oxidation
- 2Use a multimeter to check that the sensor's signal wire does not lose contact when you move the wiring
- 3If the connectors are sound and the fault remains, have a workshop replace the coolant temperature sensor
Symptoms you may notice1
- Check engine lamp lights up or behaves abnormally
General guidance for car owners. Diagnosis on the car can point to a different cause.