Engine-Codes - Generic - B123F

B123F Code - Automatic Lighting Control Unit/Sensor Internal Error

- Code Popularity: 4,046 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
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What are the Possible Causes of the DTC B123F?

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 Sunlight Sensor
  • Sunlight Sensor harness is open or shorted
  • Sunlight Sensor circuit poor electrical connection
  • Faulty Climate Control Unit
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How to Fix the DTC B123F?

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 pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the B123F code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

What Does the B123F Code Mean?

The Climate Control Unit monitors the Automatic Lighting Control Unit/Sensor. The Climate Control Unit sets the OBDII code when the Automatic Lighting Control Unit/Sensor is not to factory specifications.

B123F Code - Automatic Lighting Control Unit/Sensor Internal Error

Need more Information on the Code?

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Code B123F Information for Specific Makes

  • B123F Acura Automatic Lighting Control Unit/Sensor Internal Error
  • B123F Honda Automatic Lighting Control Unit/Sensor Internal Error

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