VOLVO
ECM-363B - Ignition coil cylinder 4. Signal missing
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 (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 is not receiving a signal from the ignition coil for cylinder 4. Because the coil gets no control signal, cylinder 4 can misfire. The fault may be in the connectors, the wire or the coil, so the connectors are a good place to begin.
Possible causes
- Poor contact at the connectors
- Open circuit in the signal wire
- Damaged ignition coil
What you can do
- 1Check that the connector to ignition coil 4 is fully seated and not corroded
- 2Follow the wire from the coil and look for breaks in the insulation or chafing against edges
- 3Use a multimeter to check that the wire is not broken, with the connector unplugged at the coil
- 4Read the code, note that it refers to ignition coil 4, clear it and road test
- 5If the wire is intact but the fault remains: have a workshop with diagnostic equipment check the ignition coil
Symptoms you may notice2
- The malfunction indicator lamp lights
- Cylinder 4 may not fire correctly
General guidance for car owners. Diagnosis on the car can point to a different cause.