VOLVO
CEM-U040086 - Invalid Data Received. Bus Signal / Message Failures. Signal invalid
System
Sentral elektronikk (CEM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
9 modellerS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)
Hva betyr feilkoden?
The fault code means that CEM receives invalid information about the car's attitude, meaning load, acceleration and braking. On cars with Four-C the information comes from the suspension module (SUM), and on other cars from the position sensors in the suspension. The headlamp height and side adjustment can then be affected.
Mulige årsaker
- Faulty or missing communication with the suspension module (SUM), on cars with Four-C
- Faulty signal from one of the position sensors at the front or rear suspension
- Check stored fault codes for the position sensors, since the cause often lies there
Hva du kan gjøre
- 1Read the fault codes in all control modules and note which position sensors have codes
- 2Check the connectors to the position sensors at the front and rear suspension for loose contact and damage
- 3On a car with Four-C, have a workshop read the suspension module with diagnostic equipment
- 4With a diagnostic tool, read the position sensor values in live data and check that they change smoothly as the car moves over a bump
Symptomer du kan merke3
- Headlamp side adjustment does not follow the steering or does not work
- Headlamp height is wrong or the adjustment does not work
- Text window and warning symbol with a text message
Hva feilen kan påvirke2
- Constant light beam length is used
- Side adjustment freezes straight ahead
Generell veiledning for bileiere. Feilsøking på bilen kan peke på en annen årsak.