VOLVO
ECM-P008400 - Exhaust valve control circuit (bank 2). General fault information. Type of fault not specified.
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
2 modellerS80 (2007–), XC90 (2003–)
Vis modeller per årsmodell og motor (2)
Hva betyr feilkoden?
The engine control module (ECM) adjusts the exhaust camshaft position on bank 2, the cylinder row furthest to the rear, with a changeover valve. The fault code is set when the control signal to the valve is missing. This can be an open circuit in the signal or supply wire, or a damaged valve.
Mulige årsaker
- Open circuit in the signal wire to the changeover valve
- Open circuit in the voltage supply wire to the changeover valve
- Damaged exhaust camshaft changeover valve
Hva du kan gjøre
- 1Check the fuse for the circuit. If it has blown, use a multimeter to check that the wire is not shorted to ground
- 2Measure the valve resistance if the connector and wiring are in order, or have a workshop do it
- 3Use a multimeter to check that the signal and supply wires to the valve have no open circuit
- 4Check the exhaust valve connector for loose connections and corrosion
- 5Have a workshop with diagnostic equipment check the control module if the fault remains
Symptomer du kan merke4
- Check engine lamp (MIL) lights up
- Uneven idle
- Poor performance
- The engine can stall while driving
Hva feilen kan påvirke1
- Exhaust camshaft control is switched off
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