VOLVO
CEM-B104F16 - Switch Polling Pullup. General Electrical Failures. Circuit voltage below threshold
Układ
Centralny moduł elektroniczny (CEM)
Modele Volvo, których dotyczy ten kod błędu
Dotyczy następujących modeli:
2 modeleV40 (2013–), V40 Cross Country (2013–)
Pokaż modele wg rocznika i silnika (2)
Co oznacza ten kod błędu?
The CEM briefly powers several switches and contacts, such as those for the doors, bonnet, clutch pedal and brake lights, before reading them. The code is stored when these inputs have been powered during sleep mode, which raises the quiescent current draw. The code does not necessarily mean the CEM itself is faulty.
Możliwe przyczyny
- Internal fault in the CEM
- Insufficient battery voltage, which can set the code without the CEM being faulty
Co możesz zrobić
- 1Switch the ignition off and on once, then read off the codes again
- 2Check the battery charge and condition, and that the terminal clamps are tight and free from corrosion
- 3Check that the connectors for the doors, bonnet, clutch pedal and brake lights are fully engaged and not damaged
- 4If you have a diagnostic tool, follow in live data how the status of the doors, tailgate and brake lights changes when you open, close and press the brake
- 5If the code only appears occasionally, usually no action is needed; if it keeps coming back, have a workshop with diagnostic equipment check the central electronic module
Objawy, które możesz zauważyć2
- The battery is weak
- The battery may be completely flat
Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.