A/C-Heater Systems Dual Electronic Automatic Temperature Control (DATC) Module Diagnostic Trouble Code (DTC) List
A/C-HEATER SYSTEMS DUAL ELECTRONIC AUTOMATIC TEMPERATURE CONTROL (DATC) MODULE DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Run-Time (Intermittent) Faults or Self-Test (Hard) Faults | Description | Perform Test |
|---|---|---|---|
| B1242 | 1242 | Recirculation door actuator circuit failure | Go To PINPOINT TEST C . |
| B1251 | 1251 | In-vehicle temperature sensor circuit open | Go To PINPOINT TEST D . |
| B1253 | 1253 | In-vehicle temperature sensor circuit short to ground | Go To PINPOINT TEST D . |
| B1255 | 1255 | Ambient air temperature sensor open | Go To PINPOINT TEST F . |
| B1257 | 1257 | Ambient air temperature sensor short to ground | Go To PINPOINT TEST F . |
| B1259 | 1259 | A/C solar radiation sensor open circuit | Go To PINPOINT TEST G . |
| B1261 | 1261 | A/C solar radiation sensor circuit short to ground | Go To PINPOINT TEST G . |
| B1262 | 1262 | Defrost door actuator circuit failure | Go To PINPOINT TEST C . |
| B1263 | 1263 | Panel door actuator circuit failure | Go To PINPOINT TEST C . |
| B1264 | 1264 | Floor door actuator circuit failure | Go To PINPOINT TEST C . |
| B1265 | 1265 | Cold air bypass door actuator circuit failure | INSPECT the vehicle for the presence of a cold air bypass door actuator. If a cold air bypass actuator is present, Go To PINPOINT TEST C . If a cold air bypass door actuator is not present, ignore DTC B1265. |
| B1342 | 1342 | ECU defective | INSTALL a new DATC module. |
| B1676 | 1676 | Battery voltage out of range | Check charging system. |
| B1946 | 1946 | Evaporator discharge temperature sensor open circuit | Go To PINPOINT TEST E . |
| B1947 | 1947 | Evaporator discharge temperature sensor circuit short to ground | Go To PINPOINT TEST E . |
| B1966 | 1966 | Driver heater core discharge temperature sensor open circuit | Go To PINPOINT TEST E . |
| B1967 | 1967 | Driver heater core discharge temperature sensor short circuit | Go To PINPOINT TEST E . |
| B2428 | 2428 | Passenger heater core discharge temperature sensor open circuit | Go To PINPOINT TEST E . |
| B2429 | 2429 | Passenger heater core discharge temperature sensor short circuit | Go To PINPOINT TEST E . |
| B2477 | 2477 | Module configuration failure | RECONFIGURE the DATC module. |
| B2797 | 2797 | Driver coolant control valve open circuit | Go To PINPOINT TEST J . |
| B2798 | 2798 | Driver coolant control valve circuit short to ground | Go To PINPOINT TEST H . |
| B2799 | 2799 | Passenger coolant control valve open circuit | Go To PINPOINT TEST J . |
| B2800 | 2800 | Passenger coolant control valve circuit short to ground | Go To PINPOINT TEST H . |
| U1041 | - | SCP invalid or missing data for function read vehicle speed | REFER to SELF-DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE . |
| U1073 | - | SCP invalid or missing data for engine coolant | REFER to SELF-DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE . |
| U1027 | - | SCP invalid or missing data for engine RPM | REFER to SELF-DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE . |
| U1178 | - | SCP invalid or missing data for voice command | This code will only appear if the vehicle is equipped with voice command. |
| U1222 | - | SCP invalid or missing data for interior lamps | - |