VOLVO
ECM-P050382 - Vehicle Speed Sensor A Intermittent/Erratic/High. Bus Signal / Message Failures. Alive / sequence counter incorrect / not updated
Układ
Sterownik silnika (ECM)
Modele Volvo, których dotyczy ten kod błędu
Dotyczy następujących modeli:
1 modelS60 (2011–)
Pokaż modele wg rocznika i silnika (1)
Co oznacza ten kod błędu?
The brake control module (BCM) sends the speed message on the CAN network with a counter that should change for each new message. If the counter is wrong or stops changing, the engine control module (ECM) finds that the signal cannot be trusted and sets the code. The code is also stored in the BCM, where diagnosis is carried out. The fault is intermittent.
Możliwe przyczyny
- Incorrect speed information sent on to the BCM
Co możesz zrobić
- 1Read the codes in the brake control module and the engine control module and note which are stored
- 2Diagnose the fault in the brake control module, as it sends the signal. Repair the fault there, then clear the code in the engine control module
- 3Check that the connectors in the CAN connections to the brake control module are secure and free from corrosion
- 4If you have a diagnostic tool, read the live data for the speed value from the brake control module and check that the value updates smoothly during a short road test
- 5Road test the car and see whether the code returns once the fault is repaired
- 6Do not work on the brake control module yourself; have a workshop carry out the checks that need diagnostic equipment
Objawy, które możesz zauważyć3
- Cruise control does not engage
- Cruise control does not hold the set speed and disengages
- Autostart does not work
Na co może wpływać usterka1
- The speed value from the brake control module is replaced by a default value
Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.