VOLVO
ECM-3240 - Misfire cylinder 4, start-up. Start up
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
2 modelsS80 (1999–2006), XC90 (2003–)
Show models by year and engine (2)
What does this fault code mean?
The engine has misfired on cylinder four during the first revolutions after it was started. The control module stores the code when the misfires are detected during starting and indicates cylinder four. The causes may lie in the fuel, the intake or the crankcase ventilation.
Possible causes
- Low fuel level
- Engine never reaches full operating temperature across repeated cold starts
- Contaminated or incorrect fuel
- Air leakage
- Blocked crankcase ventilation
- Blocked or leaking injector
What you can do
- 1First investigate the other fault codes that affect camshaft control or the camshaft reset valve
- 2Check the fuel level in the tank and that the engine oil level is correct
- 3Check the spark plug on cylinder four
- 4Check the crankcase ventilation for blockages
- 5Check that the fuel suits the season
- 6If the fault remains, have a workshop check the fuel pressure
Symptoms you may notice5
- Engine warning lamp lit
- The engine misfires
- The engine is difficult to start
- Uneven idle
- Poor performance
What the fault can affect2
- Rear oxygen sensor control is switched off
- Lambda control is switched off
General guidance for car owners. Diagnosis on the car can point to a different cause.