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AutoCodes - Generic - B1857

B1857 Code - Climate Control On/Off Switch Circuit Failure

- Code Popularity: 3,541 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B1857?

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 Climate Control On/Off Switch
  • Climate Control On/Off Switch harness is open or shorted
  • Climate Control On/Off Switch circuit poor electrical connection
  • Faulty Body Control Module (BCM)
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How to Fix the DTC B1857?

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 B1857 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 B1857 Description

The Body Control Module (BCM) monitors the Climate Control On/Off Switch. The BCM sets the OBDII code when the Climate Control On/Off Switch is not to factory specifications.

OBDII Code B1857 - Climate Control On/Off Switch Circuit Failure - AutoCodes.com
B1857 Code - Climate Control On/Off Switch Circuit Failure

Need More Information on the Code?

Need more information on how to fix the B1857 code? Get Access to Factory Service Manuals

Information for Specific Makes

  • B1857 Lexus Short To Ground In Rear Side Squib Left Circuit
  • B1857 Scion Short To Ground In Rear Side Squib Left Circuit
  • B1857 Toyota Short To Ground In Rear Side Squib Left Circuit

Need Help with the Code?

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Code B1857 comments

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