B1257 Possible Causes
- Faulty Air Temperature External Sensor
- Air Temperature External Sensor harness is open or shorted
- Air Temperature External Sensor circuit poor electrical connection
How do I fix code B1257Check 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 B1257 code
Labor: 1.0The cost of diagnosing the B1257 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.
- Engine Light ON (or Service Engine Soon Warning Light)
B1257 MeaningThe Powertrain Control Module (PCM) monitors the Air Temperature External Sensor. The PCM sets the OBDII code when the Air Temperature External Sensor is not to factory specifications.
B1257 More InformationNeed more information on how to fix the B1257 code?
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