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B2A31 Code - Left Front Lamp Low Beam Circuit Short To Ground

- Code Popularity: 509 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B2A31?

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 Left Front Lamp Low Beam
  • Left Front Lamp Low Beam harness is open or shorted
  • Left Front Lamp Low Beam circuit poor electrical connection
  • Faulty Smart Junction Box (SJB)
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How to Fix the DTC B2A31?

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 B2A31 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 B2A31 Description

The Smart Junction Box (SJB) sends voltage signals to the headlamp switch to monitor the OFF, PARKING LAMPS ON and HEADLAMPS ON positions. At any given time, the headlamp switch routes one of the input circuits to ground. When the SJB detects the headlamp switch in the HEADLAMPS ON position with the multifunction switch in the LOW BEAM position, the SJB provides voltage to the LH and RH low beam headlamps. The Diagnostic Trouble Code (DTC) set when the SJB detects a short to ground from the LH low beam output circuit.

OBDII Code B2A31 - Left Front Lamp Low Beam Circuit Short To Ground - AutoCodes.com
B2A31 Code - Left Front Lamp Low Beam Circuit Short To Ground

Need More Information on the Code?

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Information for Specific Makes

  • B2A31 Ford Left Front Lamp Low Beam Circuit Short To Ground
  • B2A31 Lincoln Left Front Lamp Low Beam Circuit Short To Ground
  • B2A31 Mercury Left Front Lamp Low Beam Circuit Short To Ground

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Code B2A31 comments

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