VOLVO
BCM-0020 - Right front wheel sensor. Signal missing
System
Bremsestyring (BCM)
Volvo-modeller feilkoden gjelder for
Feilkoden har ulik betydning avhengig av modell, årsmodell eller motor. Velg betydningen som gjelder din bil.
Gjelder følgende modeller:
5 modellerS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Vis modeller per årsmodell og motor (11)
- Volvo S60 (2001–2009)2002–2009
- Volvo S80 (1999–2006)2002–2006
- Volvo V70 (2000–2008)2002–2008
- Volvo V70 XC / XC70 (2001–2007)2002–2007
- Volvo XC90 (2003–)2003–2004, 2015
- Volvo XC90 (2003–)2005–2006Alle motorer unntatt: B8444S
- Volvo XC90 (2003–)2007Kun motor: B5254T2, D5244T4
- Volvo XC90 (2003–)2008–2010Alle motorer unntatt: B6324S, B8444S
- Volvo XC90 (2003–)2011Alle motorer unntatt: B6324S5, B8444S
- Volvo XC90 (2003–)2012Alle motorer unntatt: B6324S5
- Volvo XC90 (2003–)2013–2014Kun motor: B5254T9
Hva betyr feilkoden?
The brake control module (BCM) receives wheel speed information from the wheel sensors, which read a toothed ring on the wheel axle. The code is set if the signal from the right front wheel sensor is disturbed or drops out many times. It can only be diagnosed while the car is rolling, so it is usually seen then.
Mulige årsaker
- Contact resistance in the connections
- Open circuit, or short to ground or supply voltage, in the sensor supply
- Signal wires shorted to each other
- Signal wire shorted to ground or supply voltage, or with an open circuit
- Defective wheel sensor
- Internal fault in the control module
Hva du kan gjøre
- 1Check the connectors at the brake control module and the wheel sensor for contact resistance and oxidation
- 2Read the wheel speed with diagnostic equipment while the wheel is turned; if the value updates, the fault was a poor connection
- 3Check the wire between the brake control module and the wheel sensor, especially near the steering column, for damage and chafing
- 4Clear the code and road test to see whether it returns
- 5The brake system is safety critical: drive carefully until the fault is fixed, and do not work on ABS or the brakes yourself
Symptomer du kan merke4
- The general warning lamp and ABS warning lamp come on
- The brake circuit does not work and the warning lamp comes on
- Traction control, stability control and anti-skid do not work
- With an intermittent fault the ABS lamp may only go out some way into the next drive
Hva feilen kan påvirke3
- ABS is disabled
- Electronic brake force distribution (EBD) is disabled if two or more wheel sensors have failed
- Traction control, stability control, active yaw control (AYC) and brake assist are disabled
Generell veiledning for bileiere. Feilsøking på bilen kan peke på en annen årsak.