VOLVO
ECM-P050423 - Brake Switch A / B Correlation. General Signal Failures. Signal stuck low
Układ
Sterownik silnika (ECM)
Modele Volvo, których dotyczy ten kod błędu
Dotyczy następujących modeli:
7 modeliS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V70 (2008–), XC60 (2009–)
Pokaż modele wg rocznika i silnika (20)
- Volvo S60 (2011–)2011Tylko silnik: B4164T, B4164T3, B4204T6, B4204T7
- Volvo S60 (2011–)2012–2014Tylko silnik: B4164T, B4164T2, B4164T3, B4204T7
- Volvo S60 (2011–)2015Tylko silnik: B4164T, B4164T2, B4164T3
- Volvo S80 (2007–)2010Tylko silnik: B4204T6
- Volvo S80 (2007–)2011Tylko silnik: B4164T, B4204T6, B4204T7
- Volvo S80 (2007–)2012–2014Tylko silnik: B4164T, B4164T2, B4204T6, B4204T7
- Volvo S80 (2007–)2015Tylko silnik: B4164T
- Volvo V40 (2013–)2013Tylko silnik: B4164T, B4164T3
- Volvo V40 (2013–)2014–2015Tylko silnik: B4164T, B4164T3, B4164T4
- Volvo V40 Cross Country (2013–)2013–2015Tylko silnik: B4164T
- Volvo V60 (2011–)2011Tylko silnik: B4164T, B4164T3, B4204T6, B4204T7
- Volvo V60 (2011–)2012–2014Tylko silnik: B4164T, B4164T2, B4164T3, B4204T7
- Volvo V60 (2011–)2015Tylko silnik: B4164T, B4164T2, B4164T3
- Volvo V70 (2008–)2010Tylko silnik: B4204T6
- Volvo V70 (2008–)2011Tylko silnik: B4164T, B4204T6, B4204T7
- Volvo V70 (2008–)2012–2014Tylko silnik: B4164T, B4164T2, B4204T7
- Volvo V70 (2008–)2015Tylko silnik: B4164T, B4164T2
- Volvo XC60 (2009–)2010Tylko silnik: B4204T6
- Volvo XC60 (2009–)2011–2012Tylko silnik: B4204T6, B4204T7
- Volvo XC60 (2009–)2013–2015Tylko silnik: B4204T7
Co oznacza ten kod błędu?
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.
Możliwe przyczyny
- 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
Co możesz zrobić
- 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
Objawy, które możesz zauważyć3
- Red warning symbol and message in the display
- Cruise control does not engage
- Warning symbol and message in the display
Na co może wpływać usterka1
- Cruise control is switched off while the fault is active
Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.