HVAC Module - Dual Automatic Temperature Control (DATC) DTC Chart
DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Action to Take |
|---|---|---|
| B1003 | Mode Door Circuit Failure | Go To PINPOINT TEST I . |
| B1200 | Climate Control Pushbutton Circuit Failure | Button held too long may set DTC. ATTEMPT to clean buttons. If code returns, INSTALL a new HVAC module. REFER to CLIMATE CONTROL article. |
| 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 . |
| B1342 | ECU Is Faulted INSTALL a new HVAC module. | REFER to CLIMATE CONTROL article. |
| B1676 | Battery Pack Voltage Out Of Range | Go To PINPOINT TEST Y . |
| B2266 | Left Side Blend Door Circuit Failure | Go To PINPOINT TEST O . |
| B2267 | Right Side Blend Door Circuit Failure | Go To PINPOINT TEST O . |
| 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 V . |
| B2917 | Rear Mode Door Circuit Failure | Go To PINPOINT TEST W . |
| B2918 | Aux Temp Blend Input Circuit Failure | If the vehicle is not equipped with a center console and rear auxiliary climate controls, ignore the DTC and continue diagnostics. If the vehicle is equipped with a center console and rear auxiliary climate controls, Go To PINPOINT TEST X . |
| B2919 | Aux Blower Motor Speed Input Circuit Failure | If the vehicle is not equipped with a center console and rear auxiliary climate controls, ignore the DTC and continue diagnostics. If the vehicle is equipped with a center console and rear auxiliary climate controls, Go To PINPOINT TEST X . |
| U2050 | No Application Present | INSTALL a new HVAC module. REFER to CLIMATE CONTROL article. |
| All Other DTCs | - | REFER to the Master DTC Chart in MULTIFUNCTION ELECTRONIC MODULES article. |