Diagnostic Trouble Code Chart
NOTE:
Some PCM DTCs may inhibit air conditioning (A/C) operation. If any PCM DTCs are retrieved, diagnose those first. Refer to Introduction - Gasoline Engines
.
ELECTRONIC MANUAL TEMPERATURE CONTROL (EMTC) MODULE DIAGNOSTIC TROUBLE CODE (DTC) CHART
| DTC | Description | Action to Take |
|---|---|---|
| B1200 | Stuck Button | Button held too long may set DTC. ATTEMPT to clean buttons. If code returns, INSTALL a new EATC module. REFER to CLIMATE CONTROL article. |
| B1342 | EMTC Module Faulted | INSTALL a new EMTC module. REFER to CLIMATE CONTROL article. |
| B1003 | Mode Door Short/Failure | Go to Pinpoint Test H . |
| B1676 | Battery Voltage Out Of Range | Go to Pinpoint Test W . |
| B2266 | (LH) Blend Door Failure or Short | Go to Pinpoint Test M . |
| B2826 | Evaporator Temperature Sensor Circuit Failure | Go to Pinpoint Test E . |
| B2827 | Evaporator Temperature Sensor Circuit Short to Ground | Go to Pinpoint Test E . |
| B2916 | Auxiliary Blend Door Failure | Go to Pinpoint Test T . |
| B2917 | Auxiliary Mode Door Failure | Go to Pinpoint Test U . |
| B2918 | Auxiliary Temperature Input Circuit Open/Short to Ground | 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 V . |
| B2919 | Auxiliary Blower Motor Speed Input Circuit Open/Short to Ground | 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 V . |
| U2050 | No Application Present | INSTALL a new EMTC module. REFER to CLIMATE CONTROL article. |
NOTE:
Some PCM DTCs may inhibit air conditioning (A/C) operation. If any PCM DTCs are retrieved, diagnose those first. Refer to the Introduction - Gasoline Engines
article.
ELECTRONIC AUTOMATIC TEMPERATURE CONTROL (EATC) MODULE DIAGNOSTIC TROUBLE CODE (DTC) CHART
| DTC | Description | Action to Take |
|---|---|---|
| B1200 | Stuck Button | Button held too long may set DTC. ATTEMPT to clean buttons. If code returns, INSTALL a new EATC module. REFER to CLIMATE CONTROL article. |
| B1251 | In-Vehicle Temperature Sensor Open Circuit | Go to Pinpoint Test A . |
| B1253 | In-Vehicle Temperature Sensor Circuit Short to Ground | Go to Pinpoint Test A . |
| B1255 | Ambient Temperature Sensor Open Circuit | Go to Pinpoint Test B . |
| B1257 | Ambient Temperature Sensor Circuit Short to Ground | Go to Pinpoint Test B . |
| B2795 | LH A/C Solar Radiation Sensor Circuit Short to Ground | Go to Pinpoint Test C . |
| B2796 | LH A/C Solar Radiation Sensor Open Circuit | Go to Pinpoint Test C . |
| B2426 | RH A/C Solar Radiation Sensor Open Circuit | Go to Pinpoint Test C . |
| B2427 | RH A/C Solar Radiation Sensor Circuit Short to Ground | Go to Pinpoint Test C . |
| B2784 | A/C Humidity Sensor Circuit Open | Go to Pinpoint Test D . |
| B2783 | A/C Humidity Sensor Circuit Short to Ground | Go to Pinpoint Test D . |
| B2826 | Evaporator Temperature Sensor Circuit Failure | Go to Pinpoint Test E . |
| B2827 | Evaporator Temperature Sensor Circuit Short to Ground | Go to Pinpoint Test E . |
| B2268 | Steering Wheel Control Switch Circuit Open | Go to Pinpoint Test F . |
| B2269 | Steering Wheel Control Switch Circuit Short to Ground | Go to Pinpoint Test F . |
| B2266 | LH Blend Door Failure or Short | Go to Pinpoint Test M . |
| B2267 | RH Blend Door Failure or Short | Go to Pinpoint Test M . |
| B1003 | Mode Door Short/Failure | Go to Pinpoint Test H . |
| B2916 | Auxiliary Blend Door Failure | Go to Pinpoint Test T . |
| B2917 | Auxiliary Mode Door Failure | Go to Pinpoint Test U . |
| B2918 | Auxiliary Temperature Input Circuit Open/Short to Ground | 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 V . |
| B2919 | Auxiliary Blower Motor Speed Input Circuit Open/Short to Ground | 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 V . |
| B1676 | Battery Voltage Out of Range | Go to Pinpoint Test W . |
| B1342 | EATC Module Faulted | INSTALL a new EATC module. REFER to CLIMATE CONTROL article. |
| U2050 | No Application Present | INSTALL a new EATC module. REFER to CLIMATE CONTROL article. |