VOLVO
ECM-6410 - Camshaft reset valve, exhaust. Signal too low or signal missing
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:
5 modelsC70 Cabriolet (1998–2005), S60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007)
Show models by year and engine (9)
- Volvo C70 Cabriolet (1998–2005)2003–2005
- Volvo S60 (2001–2009)2002–2003Engine B5204T5, B5234T3, B5234T7, B5244T3 only
- Volvo S60 (2001–2009)2004Engine B5204T5, B5234T3, B5234T7 only
- Volvo S80 (1999–2006)2002–2003Engine B5204T5, B5234T7, B5244T3, B6294T only
- Volvo S80 (1999–2006)2004Engine B5204T5, B5234T7, B6294T only
- Volvo V70 (2000–2008)2002–2003Engine B5204T5, B5234T3, B5234T7, B5244T3 only
- Volvo V70 (2000–2008)2004Engine B5204T5, B5234T3, B5234T7 only
- Volvo V70 XC / XC70 (2001–2007)2002
- Volvo V70 XC / XC70 (2001–2007)2003–2004Engine B5234T7 only
What does this fault code mean?
The control module has registered a low or absent signal from the exhaust camshaft reset valve. The fault code is stored in that case, and the variable exhaust camshaft control is then switched off. The fault may be in the valve, in the wiring to it, or in the fuse for its power supply.
Possible causes
- Contact resistance in the connections
- Open circuit in the signal wire
- Signal wire shorted to ground
- Signal wire shorted to supply voltage, which may have blown a fuse
- Open circuit in the voltage supply wire
- Defective exhaust camshaft reset valve
What you can do
- 1Read the fault code status and start the engine to see whether the fault is still present
- 2When the engine will not start, look at the fuse that feeds the reset valve. A blown fuse can cause the fault
- 3With a diagnostic tool, compare the actual exhaust camshaft angle with the target value in live data while engine speed is increased
- 4Check the connector at the reset valve. Oxidised or loose connectors can give high contact resistance and the fault
- 5Use a multimeter to check that the signal wire has no open circuit and is not shorted to ground. Replace the valve if the wiring is sound but the fault remains
Symptoms you may notice2
- Malfunction indicator lamp (MIL) lit
- The engine does not start if a fuse in the circuit has blown
What the fault can affect1
- Variable exhaust camshaft control is switched off
General guidance for car owners. Diagnosis on the car can point to a different cause.