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B12BE Ford Code - Heated Backlight/Mirror Relay Drive Circuit Shorted To Battery Voltage

- Code Popularity: 1,323 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B12BE Ford?

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 Rear Window Defrost Relay
  • Rear Window Defrost Relay harness is open or shorted
  • Rear Window Defrost Relay circuit poor electrical connection
  • Faulty Rear Window Defrost Switch
  • Faulty Rear Window Defrost Grid
  • Faulty Heating Ventilation Air Conditioning (HVAC) Module
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How to Fix the DTC B12BE Ford?

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 B12BE Ford 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 B12BE Ford Description

The Rear Window Defrost Relay receives power from the Battery Junction Box (BJB). When the rear window defrost switch is pressed to the ON position, the Heating Ventilation Air Conditioning (HVAC) Module activates the rear window defrost relay by grounding the circuit. When activated, the rear window defrost relay supplies 12 volts to the rear window defrost grid on the circuit. The rear window defrost grid is grounded through the circuit.

OBDII Code B12BE Ford - Heated Backlight/Mirror Relay Drive Circuit Shorted To Battery Voltage - AutoCodes.com
B12BE Ford Code - Heated Backlight/Mirror Relay Drive Circuit Shorted To Battery Voltage

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Code B12BE Ford comments

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