VOLVO
CEM-B109A09 - Quiescent Current in Normal Mode. General Failure Information. Component Failures
System
Sentral elektronikk (CEM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
2 modellerV40 (2013–), V40 Cross Country (2013–)
Vis modeller per årsmodell og motor (2)
Hva betyr feilkoden?
Information about the vehicle's power supply is stored in the central electronic module (CEM) and in the battery monitoring sensor (BMS). The fault shows that the vehicle's standby power consumption is higher than normal, which can be caused by a control module that does not go to sleep, an internal short in a module, or a leakage current. The code alone does not point to a fault in the CEM, so the module should not be replaced unless fault tracing identifies it.
Mulige årsaker
- One of the control modules does not go to sleep mode
- One of the control modules has an internal short circuit
- Leakage current in wiring or connectors somewhere in the car
Hva du kan gjøre
- 1Clear the code and check whether it returns after the car has been locked and left standing overnight
- 2Check that the cabin, luggage and other lighting is off when the car is parked
- 3Check the battery condition and that the terminal clamps are tight and clean
- 4Remove any extra equipment fitted afterwards, such as an alarm or charger, and see whether the fault clears
- 5If the fault returns, have a workshop measure the standby current and find which control module or circuit draws too much
Symptomer du kan merke5
- The engine does not start or does not turn over
- No clicking sound when trying to start
- The battery is dead or has low voltage
- Warning symbol and text message about a low battery in the display
- The central locking does not work
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