Possible Causes
NOTE:
This DTC is set when the powertrain control module has not received an expected signal from the automatic temperature control module within the specified time interval.
- Automatic temperature control module power or ground circuit open circuit, high resistance
- Medium speed CAN bus (comfort) circuit short circuit to ground, short circuit to power, open circuit, high resistance
- High speed CAN bus (powertrain) circuit short circuit to ground, short circuit to power, open circuit, high resistance
- Climate control system fault