VOLVO
CEM-U025000 - Lost Communication With Pedestrian Protection Module (PPM). General Failure Information. No sub type information
System
Central Electronic Module (CEM)
Volvo models this fault code applies to
Applies to the following models:
2 modelsV40 (2013–), V40 Cross Country (2013–)
Show models by year and engine (2)
What does this fault code mean?
The fault code means that the control module storing the fault has lost, or has disturbed, communication with the pedestrian protection module (PPM). A yellow warning symbol and text message may show in the display. The fault concerns the network rather than one individual control module.
Possible causes
- Voltage supply to the pedestrian protection module (PPM) is missing
- Broken ground wire to the PPM
- Contact resistance in the connections
- Open or shorted CAN wiring
- A module not intended for the car, such as a used unit with other software or hardware
What you can do
- 1Check the power supply and body ground point to the PPM, and confirm the connectors are secure
- 2Check the PPM connector for contact resistance, oxidation and looseness
- 3Check the ground wire for breaks or a short to voltage
- 4If the fault returns, have a workshop with diagnostic equipment check the CAN wiring. Replace the CEM only if testing shows it is damaged
Symptoms you may notice1
- Yellow warning symbol and text message in the display
General guidance for car owners. Diagnosis on the car can point to a different cause.