VOLVO
EFI-0066 - Brake vacuum sensor. Faulty signal
System
Elektronisk drivstoffinnsprøytning (EFI)
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Gjelder følgende modeller:
2 modellerS40 (1996–2004), V40 (1996–2004)
Vis modeller per årsmodell og motor (2)
Hva betyr feilkoden?
The signal from the brake vacuum sensor to the engine control module is faulty. The fault can lie in the sensor or in the wiring and connectors to it. The fault code lights the malfunction indicator lamp and makes the engine run only on a rich fuel/air mixture.
Mulige årsaker
- Contact resistance at the connectors
- Short circuit to ground or supply voltage in the signal wire
- Open circuit in the signal wire
- The brake vacuum sensor is defective
Hva du kan gjøre
- 1Read other fault codes and write them down before you replace any part
- 2Use a multimeter to check that the wiring to the brake vacuum sensor has no break and is not shorted to earth
- 3Check the connectors at the sensor and the control module
- 4If you have diagnostic equipment: read the brake vacuum sensor value in live data and check that it changes when the brake pedal is pressed with the ignition on
- 5If the wiring is intact, replace the brake vacuum sensor and check that the fault code does not return
Symptomer du kan merke1
- Malfunction indicator lamp (MIL) comes on
Hva feilen kan påvirke1
- The engine runs only on a rich fuel/air mixture
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