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AutoCodes - Generic - B1257

B1257 Code - Air Temperature External Sensor Circuit Short To Ground

- Code Popularity: 10,336 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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By - Updated Mar 06, 2019
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|Code 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 the Code B1257?

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.

Does your Car have Safety Recalls? → Check here

|What is the Cost to Diagnose the Code B1257?

Labor: 1.0

The cost of diagnosing the B1257 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

|What are Code B1257 Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|Code B1257 Description

The 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.

OBDII Code B1257 - Air Temperature External Sensor Circuit Short To Ground -
B1257 Code - Air Temperature External Sensor Circuit Short To Ground

|Need More Information on the B1257 Code?

Need more information on how to fix the B1257 code? Get Access to Factory Service Manuals

|Need Help with the B1257 Code?

Get the B1257 code diagnosed by a professional: Find a repair shop in your area

|Code B1257 comments

Help us improve Leave a comment below or tell us if the information above helps you fix the code. What are the symptoms on your vehicle for the B1257 code? Have you replaced any parts?
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