Suggested Hybspec services
Based on the systems affected by this code, we will most likely start with:
B0345
ŚredniCode B0345 – Low Signal Level in Selection Switch Circuit 7 (A/C Cooling System).
Code B0345 indicates a low signal in the selection switch circuit 7 of the air conditioning cooling system. This can cause problems with the heating or airflow operation. To avoid further faults, professional vehicle electrical diagnostics are recommended.
Symptoms
Incorrect operation of heating or air conditioning, problems with airflow regulation, possible complete shutdown of HVAC functions, no response to changes in airflow settings.
Possible causes
Faulty selection switch 7 Open or short circuit in the switch circuit wiring harness Corrosion or damage to electrical connectors Faulty HVAC control module Short to ground in the signal circuit
Affected systems
Does code B0345 require professional diagnostics?
The code alone is not enough. To find the cause, you need to read live data, check freeze frame conditions, and compare with vehicle behavior. Book a diagnostic session.