Fault Code 2243

Fault code 2243

Additional heating control module

Diagnostic conditions
- Ignition on
- Battery voltage OK (11.4 to 14.5 V)
- Internal function test completed on air-conditioning system regulator control module

Possible causes of fault
- CAN comfort, no signal/communication
- Additional heating control module switches to limp-home mode
- Air-conditioning system regulator control module faulty

Affected pins
-

Diagnosis/troubleshooting