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AutoCodes - Generic - B1256

B1256 Code - Air Temperature External Sensor Circuit Short To Battery

- Code Popularity: 21,140 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B1256?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Air Temperature External Sensor
  • Air Temperature External Sensor harness is open or shorted
  • Air Temperature External Sensor circuit poor electrical connection
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How to Fix the DTC B1256?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1256 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

Code B1256 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 B1256 - Air Temperature External Sensor Circuit Short To Battery - AutoCodes.com
B1256 Code - Air Temperature External Sensor Circuit Short To Battery

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Code B1256 comments

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