VOLVO
CEM-AFFE - Missing tire pressure sensor Signal missing
System
Central Electronic Module (CEM)
Volvo models this fault code applies to
Applies to the following models:
5 modelsC30 (2007–2013), C30 Electric (2011–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
What does this fault code mean?
The signal from a tyre pressure sensor is missing in the current drive, although the sensor sent messages before. The central electronic module (CEM) cannot tell which wheel it is, so the fault could concern any of the four. The cause may be a damaged sensor or a remote receiver that is not working.
Possible causes
- Damaged tyre pressure sensor
- The remote receiver is not working
What you can do
- 1Lock and unlock the car with the remote control to check that the remote receiver works
- 2The fault code does not store the sensor ID, so it does not show the wheel. Instead, check whether any wheel has clearly lower pressure
- 3Have a workshop with diagnostic equipment read which sensors are transmitting and replace the one that is missing
- 4Clear the fault code and road test to see whether it returns
Symptoms you may notice1
- A message appears in the information display
General guidance for car owners. Diagnosis on the car can point to a different cause.