VOLVO
ECM-400A - Canister purge (CP) valve. Faulty signal
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
7 modelsC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), S60 (2001–2009), S80 (1999–2006), V50 (2004–2013), V70 (2000–2008)
Show models by year and engine (13)
- 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 S60 (2001–2009)2003–2006Engine B5244S, B5244S2, B5244S6 only
- Volvo S60 (2001–2009)2007–2009Engine B5244S, B5244S2 only
- Volvo S80 (1999–2006)2003–2006Engine B5244S, B5244S2 only
- Volvo V50 (2004–2013)2004Engine B5244S4, B5244S5 only
- Volvo V50 (2004–2013)2005–2010Engine B5244S4, B5244S5, B5244S7 only
- Volvo V70 (2000–2008)2003–2006Engine B5244S, B5244S2, B5244S6 only
- Volvo V70 (2000–2008)2007–2008Engine B5244S, B5244S2 only
What does this fault code mean?
The engine control module has found that the EVAP valve is not working correctly, by analysing the signal from the intake manifold pressure sensor. The valve may be stuck open or closed, or a hose between the intake manifold, the valve or the canister may be damaged, blocked or pinched. If the fault shows in the quick test of the valve, it is permanent.
Possible causes
- Hose between the intake manifold and the EVAP valve is damaged, blocked or pinched
- Hose between the EVAP valve and the canister is damaged, blocked or pinched
- EVAP valve stuck in the open position
- EVAP valve stuck in the closed position
What you can do
- 1Check the hoses between the intake manifold, the EVAP valve and the canister for kinks, loose joints and damage
- 2If you have a diagnostic tool: run the quick test of the EVAP valve with the engine idling and see whether the test shows poor function
- 3If the test shows poor function, check the hose to the canister; if it shows good function, check the hose to the intake pipe
- 4Read and clear the code, then road test
- 5Have a workshop check or replace the EVAP valve with diagnostic equipment if the hoses are intact
Symptoms you may notice2
- Malfunction indicator lamp is lit
- Fuel smell
General guidance for car owners. Diagnosis on the car can point to a different cause.