Engine-Codes - Generic - B123F

B123F - Automatic Lighting Control Unit/Sensor Internal Error

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

B123F Possible Causes

  • Faulty Sunlight Sensor
  • Sunlight Sensor harness is open or shorted
  • Sunlight Sensor circuit poor electrical connection
  • Faulty Climate Control Unit

How is the B123F code repair?

Start by checking 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.

What is the cost to diagnose the B123F code

Labor: 1.0

The cost to diagnose the B123F 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.

Possible Symptoms

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

B123F Meaning

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.

More Information

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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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