VOLVO
ECM-354C - Ignition coil cylinder 5, signal. Signal too high
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
5 modelsS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Show models by year and engine (13)
- Volvo S60 (2001–2009)2005–2006Engine B5204T5, B5244T4, B5244T5, B5254T2, B5254T4 only
- Volvo S60 (2001–2009)2007Engine B5204T5, B5244T5, B5254T2, B5254T4 only
- Volvo S60 (2001–2009)2008–2009Engine B5204T5, B5244T5, B5254T2 only
- Volvo S80 (1999–2006)2005–2006Engine B5204T5, B5244T4, B5254T2 only
- Volvo V70 (2000–2008)2005Engine B5204T5, B5244T4, B5244T5, B5254T2, B5254T4 only
- Volvo V70 (2000–2008)2006–2007Engine B5204T5, B5244T5, B5254T2, B5254T4 only
- Volvo V70 (2000–2008)2008Engine B5254T2 only
- Volvo V70 XC / XC70 (2001–2007)2005All engines except: D5244T
- Volvo V70 XC / XC70 (2001–2007)2006Engine B5244T4, B5254T2 only
- Volvo V70 XC / XC70 (2001–2007)2007Engine B5254T2 only
- Volvo XC90 (2003–)2005–2012Engine B5254T2 only
- Volvo XC90 (2003–)2013–2014Engine B5254T9 only
- Volvo XC90 (2003–)2015
What does this fault code mean?
The engine control module has registered that the signal from the ignition coil for cylinder 5 is too high, which mainly points to a short-circuit to supply voltage in the signal wire. The coil control is then not as it should be, and cylinder 5 may misfire. The connectors and wiring to the coil are therefore the first things to look at.
Possible causes
- Short-circuit to supply voltage in the signal wire
- Contact resistance in the connectors
- Damaged ignition coil
What you can do
- 1Check that the connector at ignition coil 5 is fully seated and dry, free from oxidation
- 2Follow the signal wire from the coil and look for chafing or places where it may have been pinched against a sharp edge
- 3Use a multimeter to check that the signal wire to the coil has no contact with plus or with other wires
- 4Read and clear the code, then road test to see whether it returns
- 5If the wire is intact: have a workshop with diagnostic equipment check the ignition coil
Symptoms you may notice2
- The malfunction indicator lamp is on
- The engine may misfire on cylinder 5
General guidance for car owners. Diagnosis on the car can point to a different cause.