VOLVO
CPM-3541 - Flame sensor. Signal too high / Signal missing
System
Forbrenningsvarmer (CPM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
5 modellerC30 (2007–2013), C30 Electric (2011–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Hva betyr feilkoden?
The combustion preheater module (CPM) has registered a signal from the flame sensor that is too high. The cause may be a short to supply voltage in the cable, poor contact or a damaged flame sensor. The heater cannot be activated until the code has been cleared.
Mulige årsaker
- The cable between the CPM and the flame sensor is shorted to supply voltage
- Contact resistance, oxidation or loose connections
- Damaged flame sensor
Hva du kan gjøre
- 1Clear the code and check that it does not return when the heater starts
- 2If you have a diagnostic tool, read whether a flame was detected after a completed heater run and compare it with what the heater did
- 3Disconnect the connector at the flame sensor and check that the contacts are secure and free from oxidation
- 4Use a multimeter to check that the cable from the connector to the flame sensor carries no voltage when the heater is off; if it does, the cable is shorted to positive
- 5If the fault returns, have a workshop check the flame sensor and the wiring to the CPM
Symptomer du kan merke2
- Poor heating in the passenger compartment
- The parking heater does not work
Hva feilen kan påvirke1
- The heater cannot be activated until the fault code has been cleared
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