CEM-1A55

Condition
If the central electronic module (CEM) registers that communication with the climate control module (CCM) does not work, diagnostic trouble code CEM-1A55 is displayed.

Condition
None

Possible source
- No power supply to CCM control unit
- Contact resistance in the connectors
- Open circuit on the CAN bus
- Defective CCM control unit.

Condition
- Blower motor does not work.