Engine-Codes - Generic - B123A

B123A Code - Left Front Turn Indicator Circuit Short

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

|B123A code possible causes

  • Faulty Left Front Turn Indicator
  • Left Front Turn Indicator harness is open or shorted
  • Left Front Turn Indicator circuit poor electrical connection
  • Faulty Body Control Module (BCM)

|How is the B123A 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.

|B123A code tech notes

B123A:11 Left Front Turn Indicator Circuit Short To Ground
B123A:15 Left Front Turn Indicator Circuit Short To Battery or Open

|What is the cost to diagnose the B123A code

Labor: 1.0

The cost to diagnose the B123A code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are B123A code possible symptoms?

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

|What is B123A code meaning?

The Steering Column Control Module (SCCM) monitors the multifunction switch position. When the multifunction switch is in the left or right TURN position, the SCCM sends a turn signal switch_status message over the communication network to the Body Control Module (BCM) indicating a request for the left or right turn signal. When the BCM receives a request for a turn signal, the BCM supplies on/off voltage to the appropriate turn lamps.
The timed on/off cycle for turn lamps is determined by the BCM and is set to flash approximately 80 times per minute if both the front and rear turn signal lamps operate correctly. If an individual turn signal lamp is inoperative, the BCM fast flashes the remaining turn lamp approximately 160 times per minute to indicate a bulb outage to the driver. The OBDII sets when the BCM detects the front, rear or exterior mirror turn lamp output is not to factory specifications.

|Need more information with the B123A code?

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|B123A code information for specific makes

|Need help with a B123A code?

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