HVAC Module DTC Table
NOTE:
Some PCM DTCs may inhibit A/C operation. If any PCM DTCs are retrieved, diagnose those first. Refer to the Introduction - Gasoline Engines
article.
HVAC MODULE DTC TABLE
| DTC | Description | Action to Take |
|---|---|---|
| B1003 | Mode Door Short/Failure | Go to Pinpoint Test I . |
| B1200 | Stuck Button | Button held too long may set DTC. ATTEMPT to clean buttons. CLEAR the DTCs. REPEAT the self-test. If code returns, INSTALL a new HVAC module - Dual Automatic Temperature Control (DATC). REFER to CLIMATE CONTROL article. |
| B1242 | Air Flow Recirculation Door Driver Circuit Failure | Go to Pinpoint Test H . |
| B1251 | Air Temperature Internal Sensor Circuit Open | Go to Pinpoint Test C . |
| B1253 | Air Temperature Internal Sensor Circuit Short to Ground | Go to Pinpoint Test C . |
| B1255 | Air Temperature External Sensor Circuit Open | Go to Pinpoint Test D . |
| B1257 | Air Temperature External Sensor Circuit Short to Ground | Go to Pinpoint Test D . |
| B1317 | Battery Voltage High | Go to Pinpoint Test X . |
| B1318 | Battery Voltage Low | Go to Pinpoint Test X . |
| B1342 | Module Faulted | INSTALL a new HVAC module - DATC. REFER to CLIMATE CONTROL article. |
| B2266 | LH Blend Door Failure or Short | Go to Pinpoint Test N . |
| B2267 | RH Blend Door Failure or Short | Go to Pinpoint Test N . |
| B2426 | Passenger Solar Radiation Sensor Circuit Open | Go to Pinpoint Test E . |
| B2427 | Passenger Solar Radiation Sensor Circuit Short to Ground | Go to Pinpoint Test E . |
| B2795 | Driver Solar Radiation Sensor Circuit Short to Ground | Go to Pinpoint Test E . |
| B2796 | Driver Solar Radiation Sensor Circuit Open | Go to Pinpoint Test E . |
| B2826 | Front Evaporator Temp Sensor Circuit Failure | Go to Pinpoint Test F . |
| B2827 | Front Evaporator Temp Sensor Short to Ground | Go to Pinpoint Test F . |
| B2916 | Rear Blend Door Circuit Failure | Go to Pinpoint Test U . |
| B2917 | Rear Mode Door Circuit Failure | Go to Pinpoint Test V . |
| B2918 | Aux Temp Blend Input Circuit Failure | Go to Pinpoint Test W . |
| B2919 | Aux Blower Motor Speed Input Circuit Failure | Go to Pinpoint Test W . |
| U2050 | No Application Present | INSTALL a new HVAC module - DATC. REFER to CLIMATE CONTROL article. |
| All Other DTCs | - | REFER to the Master DTC Table in MULTIFUNCTION ELECTRONIC MODULES article. |