VOLVO
ECM-641F - Camshaft reset valve, exhaust. Faulty signal
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Feilkoden har ulik betydning avhengig av modell, årsmodell eller motor. Velg betydningen som gjelder din bil.
Gjelder følgende modeller:
3 modellerS60 (2001–2009), S80 (1999–2006), V70 (2000–2008)
Hva betyr feilkoden?
During fuel cut-off, for example when driving downhill with the throttle closed, the engine control module carries out an adaptation of the exhaust camshaft reset valve. The module then checks that the valve reaches its end positions. If they are not reached, this is treated as a fault and the fault code is stored. The fault can be caused by a faulty signal, a loose camshaft sensor or an incorrect base setting of the timing belt.
Mulige årsaker
- Faulty signal
- Loose camshaft sensor
- Incorrect base setting of the timing belt
Hva du kan gjøre
- 1The markings on the engine show whether the timing belt is correctly positioned relative to the camshafts. If not, a workshop should adjust it
- 2Check that the camshaft sensor connector is secure and clean, since a loose sensor can cause a signal fault
- 3Have a workshop clean the reset valve, since contamination can cause the fault
- 4Replace the reset valve if the fault remains after cleaning. Clear the fault code after the work
Symptomer du kan merke3
- Reduced performance
- The engine misfires
- Uneven idle
Hva feilen kan påvirke1
- The variable exhaust camshaft is switched off
Generell veiledning for bileiere. Feilsøking på bilen kan peke på en annen årsak.