VOLVO
ECM-A048 - Speed signal, rear wheel pair. Defective signal
Układ
Sterownik silnika (ECM)
Modele Volvo, których dotyczy ten kod błędu
Dotyczy następujących modeli:
3 modeleC30 (2007–2013), S40 (2004–2013), V50 (2004–2013)
Pokaż modele wg rocznika i silnika (3)
Co oznacza ten kod błędu?
The engine control module calculates vehicle speed using, among other things, the wheel sensors on the rear wheels. If the calculated speed does not match the vehicle speed available on the CAN network, the code is set. Because the comparison is made while driving, the fault mainly shows when the car is moving.
Możliwe przyczyny
- A fault in the brake control module (BCM)
- CAN-related fault codes in the central electronic module (CEM)
Co możesz zrobić
- 1Read the fault codes in the BCM first, then in the CEM
- 2Check that the connectors to the rear wheel sensors are fully seated and free from dirt and oxidation, and look for chafing in the wiring
- 3Fault-trace and remedy the faults in the brake control module and the CAN-related codes in the CEM first; this code cannot be cleared until they have been remedied and cleared
- 4The brake control module and the wheel sensors are part of the braking system, so do not work on them yourself; have a workshop check them
Objawy, które możesz zauważyć3
- Automatic engine start and stop does not work while driving
- Automatic engine start and stop does not work at idle
- Autostart does not work
Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.