VOLVO
ECM-710C - Immobilizer Communication. Signal too high
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
4 modelsC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Show models by year and engine (9)
- Volvo C30 (2007–2013)2007Engine B5254T3 only
- Volvo C30 (2007–2013)2008–2013Engine B5254T7 only
- Volvo C70 (2006–2013)2006–2007Engine B5254T3 only
- Volvo C70 (2006–2013)2008–2013Engine B5254T7 only
- Volvo S40 (2004–2013)2005–2007Engine B5254T3 only
- Volvo S40 (2004–2013)2008Engine B5254T3, B5254T7 only
- Volvo S40 (2004–2013)2009–2012Engine B5254T7 only
- Volvo V50 (2004–2013)2005–2007Engine B5254T3 only
- Volvo V50 (2004–2013)2008–2012Engine B5254T7 only
What does this fault code mean?
The engine control module (ECM) holds an immobilizer code that is unique to each car, and it is checked against the central electronic module (CEM) before the engine may start. If the engine control module is not programmed, or an internal fault is found in it, the code is set with the ignition on. The immobilizer code is then missing from the engine control module, and the engine does not start.
Possible causes
- The ECM has never been programmed and therefore has no immobilizer code
- Damaged engine control module (ECM)
What you can do
- 1Check that the connectors to the engine control module are firmly seated and free from oxidation
- 2You cannot program the engine control module yourself; have a workshop try to program it
- 3If the engine control module is damaged, have a workshop replace it
- 4Once the workshop is finished, start the engine and check that the fault has gone
Symptoms you may notice1
- The engine cranks but will not start
General guidance for car owners. Diagnosis on the car can point to a different cause.