HVAC System - Manual - DTCS
HVAC SYSTEM - MANUAL - DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| DTC B0440, B0441, or B0442 | Auxiliary Heater Glow Plug Circuit |
| DTC B0445, B0446, or B0447 | Auxiliary Heater Fuel Pump Circuit |
| DTC B0449, B0450, B0451, or B0452 | Auxiliary Heater Blower Fan Circuit |
| DTC B0455 or B0457 | Auxiliary Heater Coolant Sensor Circuit |
| DTC B0460 or B0462 | Coolant Heater Overheat Sensor Circuit |
| DTC B0465, B0467, or B0478 | Auxiliary Heater Flame Sensor Circuit/Flame Off From Minimum Power |
| DTC B0481, B0482, or B0483 | Overheat Detected, Software Level/Overheat Detected, Hardware Level/Overheat Possible |
| DTC B0484, B0485, B0486, B0488, or B048A | Auxiliary Heater |
| DTC P0532 or P0533 | Air Conditioning A/C Refrigerant Pressure Sensor Circuit |
| DTC P0645, P0646, or P0647 | Air Conditioning (A/C) Clutch Relay Control Circuit |