VOLVO
ECM-363C - Ignition coil cylinder 4. Signal too high
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 has registered that the coil for cylinder 4 receives too high a signal. This may be a short to supply voltage in the cable between the module and the coil. If the coil itself is damaged it can also cause the fault, and cylinder 4 may then misfire.
Possible causes
- Cable between module and coil shorted to supply voltage
- Damaged ignition coil
What you can do
- 1Check that the connector at ignition coil 4 is fully seated and free from corrosion
- 2Follow the cable between the control module and the coil and look for chafing, kinks or pinch damage
- 3Look for places where the cable may have touched a live wire, for example near the battery or the fuse box
- 4Read the code, note that it refers to ignition coil 4, clear it and road test
- 5If the cable is intact: have a workshop with diagnostic equipment check the ignition coil
Symptoms you may notice2
- The malfunction indicator lamp is on
- Cylinder 4 does not fire properly
General guidance for car owners. Diagnosis on the car can point to a different cause.