VOLVO
ECM-P050423 - Brake Switch A / B Correlation. General Signal Failures. Signal stuck low
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
7 modellerS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V70 (2008–), XC60 (2009–)
Vis modeller per årsmodell og motor (20)
- Volvo S60 (2011–)2011Kun motor: B4164T, B4164T3, B4204T6, B4204T7
- Volvo S60 (2011–)2012–2014Kun motor: B4164T, B4164T2, B4164T3, B4204T7
- Volvo S60 (2011–)2015Kun motor: B4164T, B4164T2, B4164T3
- Volvo S80 (2007–)2010Kun motor: B4204T6
- Volvo S80 (2007–)2011Kun motor: B4164T, B4204T6, B4204T7
- Volvo S80 (2007–)2012–2014Kun motor: B4164T, B4164T2, B4204T6, B4204T7
- Volvo S80 (2007–)2015Kun motor: B4164T
- Volvo V40 (2013–)2013Kun motor: B4164T, B4164T3
- Volvo V40 (2013–)2014–2015Kun motor: B4164T, B4164T3, B4164T4
- Volvo V40 Cross Country (2013–)2013–2015Kun motor: B4164T
- Volvo V60 (2011–)2011Kun motor: B4164T, B4164T3, B4204T6, B4204T7
- Volvo V60 (2011–)2012–2014Kun motor: B4164T, B4164T2, B4164T3, B4204T7
- Volvo V60 (2011–)2015Kun motor: B4164T, B4164T2, B4164T3
- Volvo V70 (2008–)2010Kun motor: B4204T6
- Volvo V70 (2008–)2011Kun motor: B4164T, B4204T6, B4204T7
- Volvo V70 (2008–)2012–2014Kun motor: B4164T, B4164T2, B4204T7
- Volvo V70 (2008–)2015Kun motor: B4164T, B4164T2
- Volvo XC60 (2009–)2010Kun motor: B4204T6
- Volvo XC60 (2009–)2011–2012Kun motor: B4204T6, B4204T7
- Volvo XC60 (2009–)2013–2015Kun motor: B4204T7
Hva betyr feilkoden?
The engine control module (ECM) receives the brake pedal position from two switches. The code is set when the signal from them has stayed constantly low and no correct braking has been registered for a long time. The counter resets every drive cycle and at each correct braking. A fault in the central electronic module (CEM) may be the cause, so it is checked first.
Mulige årsaker
- Diagnose the cause in the central electronic module (CEM)
- Break or short to ground or supply voltage on the brake light switch wire
- Break or short to ground or supply voltage on the brake pedal position sensor wire
- Contact resistance, oxidation or intermittent contact in the connector
- Break or short to ground or supply voltage on the brake pedal switch wire
Hva du kan gjøre
- 1Look for stored codes in the BCM or the CEM first, and repair those before anything else
- 2Check that the brake light switch is fitted correctly and that the brake pedal position sensor is seated properly. Also check that the fuses are intact
- 3Check the connectors to the brake light switch and brake pedal sensors for oxidation, breaks or chafed wiring
- 4If you have a diagnostic tool, read the brake pedal position values in live data and check that they follow each other when the pedal is pressed and released
- 5After the repair, brake normally and clear the code. The counter resets at every correct braking
- 6Do not work on the braking system yourself; have a workshop carry out the checks that need diagnostic equipment
Symptomer du kan merke3
- Red warning symbol and message in the display
- Cruise control does not engage
- Warning symbol and message in the display
Hva feilen kan påvirke1
- Cruise control is switched off while the fault is active
Generell veiledning for bileiere. Feilsøking på bilen kan peke på en annen årsak.