B1253 Code: Meaning, Causes, and Symptoms | OBD2 Codes
B1253 – Air Temperature Internal Sensor Circuit Short To Ground
B1253 Possible Symptoms
Engine Light ON (or Service Engine Soon Warning Light)
B1253 Possible Causes
Faulty Air Temperature Internal Sensor,Air Temperature Internal Sensor harness is open or shorted,Air Temperature Internal Sensor circuit poor electrical connection,Faulty Electronic Automatic Temperature Control (EATC) Module
B1253 Description
The Electronic Automatic Temperature Control (EATC) Module monitors the Air Temperature Internal Sensor. The EATC sets the OBDII code when the Air Temperature Internal Sensor is not to factory specifications.