VOLVO
ECM-902C - Engine control module (ECM). Internal fault
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 (8)
- Volvo C30 (2007–2013)2007–2011Engine B5244S4 only
- Volvo C70 (2006–2013)2006All engines except: B5254T3
- Volvo C70 (2006–2013)2007–2010Engine B5244S4, B5244S5 only
- Volvo C70 (2006–2013)2011Engine B5244S4 only
- Volvo S40 (2004–2013)2004Engine B5244S4, B5244S5 only
- Volvo S40 (2004–2013)2005–2010Engine B5244S4, B5244S5, B5244S7 only
- Volvo V50 (2004–2013)2004Engine B5244S4, B5244S5 only
- Volvo V50 (2004–2013)2005–2010Engine B5244S4, B5244S5, B5244S7 only
What does this fault code mean?
The ECM has registered an internal fault while the cruise control is active, and the code is set. The fault lies in the control module itself. While it is active the cruise control does not work.
Possible causes
- Damaged engine control module (ECM)
What you can do
- 1If you have diagnostic equipment, read the code status; if it shows the fault is present now, it is permanent, otherwise it has been intermittent
- 2Clear the code and check whether it comes back when the cruise control is used
- 3If the fault is permanent or returns, have a workshop replace and program the control module
Symptoms you may notice1
- Cruise control does not work at all
What the fault can affect1
- Cruise control is switched off for as long as the fault is active
General guidance for car owners. Diagnosis on the car can point to a different cause.