VOLVO
ECM-5620 - Oil temperature 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 D5244T8, D5244T9 only
- Volvo C30 (2007–2013)2008–2010Engine D5244T13, D5244T8, D5244T9 only
- Volvo C70 (2006–2013)2007Engine D5244T8, D5244T9 only
- Volvo C70 (2006–2013)2008–2010Engine D5244T13, D5244T8, D5244T9 only
- Volvo S40 (2004–2013)2006Engine D5244T8 only
- Volvo S40 (2004–2013)2007Engine D5244T8, D5244T9 only
- Volvo S40 (2004–2013)2008–2010Engine D5244T13, D5244T8, D5244T9 only
- Volvo V50 (2004–2013)2006Engine D5244T8 only
- Volvo V50 (2004–2013)2007Engine D5244T8, D5244T9 only
- Volvo V50 (2004–2013)2008–2010Engine D5244T13, D5244T8, D5244T9 only
What does this fault code mean?
The engine control module (ECM) monitors the engine oil temperature through the oil temperature sensor. The code is set when the sensor's reading is faulty, for example too high or too low. The fault may come from the wiring, the connectors, or the sensor itself, and a message is shown in the text display.
Possible causes
- Signal wire shorted to voltage
- Raised contact resistance or oxidation in the connectors
- Signal wire shorted to ground or broken
- Break in the ground or supply lead
- Damaged oil temperature sensor
What you can do
- 1Check that the connector at the oil temperature sensor is fully seated and free from oxidation and contact resistance
- 2With a multimeter, check that the signal wire has no break and no short to ground
- 3With a multimeter, check that the ground and supply leads to the sensor are not broken
- 4If you have a diagnostic tool, read the oil temperature value in live data with the ignition on and see whether it is unreasonably high or low
- 5If the fault remains, have a workshop check the wiring and replace the oil temperature sensor if needed
Symptoms you may notice1
- A message is shown in the text display
General guidance for car owners. Diagnosis on the car can point to a different cause.