VOLVO
CEM-AFF6 - Tire pressurement 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?
A tyre pressure sensor that sent messages earlier in the same drive cycle has stopped doing so. The central electronic module (CEM) cannot tell which wheel this is, so the fault may be on any of the four sensors. The rest of the car is not affected by the fault.
Possible causes
- Damaged tyre pressure sensor
- The remote receiver has stopped working
What you can do
- 1Check that the remote receiver works by locking and unlocking the car with the remote control
- 2If you have a diagnostic tool, read the frozen values and note which sensor ID has lost its signal
- 3Have a workshop replace the tyre pressure sensor that has no signal, since a damaged sensor is a likely explanation
- 4Clear the fault code and take a short drive to see whether the message 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.