VOLVO
CEM-8C20 - Rear fog lamp. Faulty signal
System
Sentral elektronikk (CEM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
5 modellerC30 (2007–2013), C30 Electric (2011–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Hva betyr feilkoden?
The CEM feeds the rear fog lamps straight from one output. It has registered a power draw on that output that is lower than expected, which may be caused by a break, a short to battery voltage, or a lamp that is faulty or missing.
Mulige årsaker
- The signal wire to the rear fog lamps is short-circuited to battery voltage
- Open circuit in the signal wire to the rear fog lamps
- One or more lamps are faulty or missing
Hva du kan gjøre
- 1Switch on the rear fog lamps. If they stay dark the fault is likely permanent; if they light but the code was stored earlier, it is intermittent
- 2Check that the rear fog bulbs are intact and sit properly in their holders
- 3With the ignition off, use a multimeter to check that the wire to the rear fog lamps is unbroken and has no battery voltage
- 4Look for chafing and pinched spots along the rear cables
- 5If the fault remains, have a workshop with diagnostic equipment check the wiring and the module
Symptomer du kan merke2
- The rear fog lamps do not work
- The rear fog lamps stay lit constantly
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