VOLVO
ECM-3502 - Misfire. Multiple cylinders
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:
7 modelsC70 Cabriolet (1998–2005), C70 Coupé (1998–2002), S60 (2001–2009), S70 (1997–2000), S80 (1999–2006), V70 (1997–2000), V70 (2000–2008)
Show models by year and engine (22)
- Volvo C70 Cabriolet (1998–2005)2000Engine B5244S only
- Volvo C70 Coupé (1998–2002)1999Engine B5254S DENSO only
- Volvo C70 Coupé (1998–2002)2000Engine B5244S only
- Volvo S60 (2001–2009)2001Engine B5244S, B5244S2 only
- Volvo S60 (2001–2009)2002Engine B5244S, B5244S2, B5244SG, B5244SG2 only
- Volvo S60 (2001–2009)2003–2004Engine B5244S, B5244S2, B5244S6, B5244SG, B5244SG2 only
- Volvo S60 (2001–2009)2005Engine B5244SG, B5244SG2 only
- Volvo S60 (2001–2009)2006–2008Engine B5244SG only
- Volvo S70 (1997–2000)1999Engine B5254S DENSO only
- Volvo S70 (1997–2000)2000Engine B5244S, B5244S2, B5244SG, B5244SG2 only
- Volvo S80 (1999–2006)1999–2000Engine B5244S, B5244S2 only
- Volvo S80 (1999–2006)2001Engine B5244S, B5244S2, B5244SG only
- Volvo S80 (1999–2006)2002–2004Engine B5244S, B5244S2, B5244SG, B5244SG2 only
- Volvo S80 (1999–2006)2005Engine B5244SG, B5244SG2 only
- Volvo S80 (1999–2006)2006Engine B5244SG only
- Volvo V70 (1997–2000)1999Engine B5254S DENSO only
- Volvo V70 (1997–2000)2000Engine B5244S, B5244S2 only
- Volvo V70 (2000–2008)2001Engine B5244S, B5244S2, B5244SG only
- Volvo V70 (2000–2008)2002Engine B5244S, B5244S2, B5244SG, B5244SG2 only
- Volvo V70 (2000–2008)2003–2004Engine B5244S, B5244S2, B5244S6, B5244SG, B5244SG2 only
- Volvo V70 (2000–2008)2005Engine B5244SG, B5244SG2 only
- Volvo V70 (2000–2008)2006–2008Engine B5244SG only
What does this fault code mean?
The engine misfires in several cylinders, which increases exhaust emissions. The control module checks whether the misfire is in one cylinder or several and sets the code for each cylinder affected.
Possible causes
- Low fuel level in the tank
- Repeated cold starts that stop the engine warming up between starts
- Contaminated or incorrect fuel
- Moisture or flashover at the spark plug wells
- Incorrect camshaft control
- Uneven compression in the engine
What you can do
- 1Check that there is fuel in the tank and that the engine oil level is correct
- 2If you have a diagnostic tool: read the misfire counters and see whether more than one cylinder stands out
- 3Check that there is no moisture in the spark plug wells or on the coil connectors
- 4Check that the crankcase ventilation is not blocked and that the intake does not leak air
- 5Stored camshaft control codes should be diagnosed first
- 6Have a workshop measure fuel pressure and compression with diagnostic equipment
Symptoms you may notice5
- The engine misfires
- Hard starting
- Uneven idle
- Several cylinders are not firing
- Malfunction indicator (emissions lamp) is lit
General guidance for car owners. Diagnosis on the car can point to a different cause.