B1231 Possible Causes
- Faulty Evaporator Temperature Sensor
- Evaporator Temperature Sensor harness is open or shorted
- Evaporator Temperature Sensor circuit poor electrical connection
- Faulty Climate Control Unit
How do I fix code B1231
Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
Cost of diagnosing the B1231 code
Labor: 1.0The cost of diagnosing the B1231 code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
B1231 Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
B1231 MeaningThe Climate Control Unit monitors the Evaporator Temperature Sensor. The Climate Control Unit sets the OBDII code when the Evaporator Temperature Sensor is not to factory specifications.
B1231 More InformationNeed more information on how to fix the B1231 code?
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