Heating Ventilation Air Conditioning (HVAC)

The HVAC programmer contains self diagnostics that, when accessed with a scan tool, are designed to identify the source of any system malfunction as specifically as possible, including whether or not the malfunction is current or the non-current (history) type.

There are 14 HVAC diagnostic trouble codes (DTCs) to assist with diagnosis.

The letter "H" after any of these DTCs indicates a history code. Example: DTC 010H = History, DTC 010C = Current.


DTC DESCRIPTION

008 Passenger Side Solar Sensor Circuit Open or Shorted

010 Outside Air Temperature Sensor Circuit Open or Shorted

013 Inside Air Temperature Sensor Circuit Open or Shorted

015 Driver Side Solar Sensor Circuit Open or Shorted

034 Passenger Climate Control (PCC) to Programmer Data Loss (Buick)

035 Heater and A/C Control Assembly to Programmer Data Loss (E & C)

035 Heater and A/C Control Assembly to Programmer Data Loss (Buick)

036 Passenger Climate Control Assembly Feedback Out of Range (Oldsmobile)

038 Loss of Serial Data (UART)

052 HVAC Programmer Loss of Keep Alive Memory (KAM)

340 Air Mix Door #1 Feedback Out of Range

341 Air Mix Door #2 Feedback Out of Range

349 Def/Heater Door Feedback Out of Range

350 A/C Door Feedback Out of Range

351 Air Inlet Door Feedback Out of Range