AutoCodes – Ford – B12BC Ford

B12BC Ford Code - Mirror Position Sensor Supply Circuit Short To Ground

Quick Answer

The Body Control Module (BCM) monitors the Mirror Position Sensor. Common causes include Faulty Mirror Position Sensor, Mirror Position Sensor harness is open or shorted, Mirror Position Sensor circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means: B12BC Ford indicates Mirror Position Sensor Supply Circuit Short To Ground.
Common causes: Common causes include Faulty Mirror Position Sensor, Mirror Position Sensor harness is open or shorted, Mirror Position Sensor circuit poor electrical connection.
Severity: Moderate - service should be scheduled soon.
Can I drive?: The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

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Code Popularity 822

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 29, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B12BC Ford Description

The Body Control Module (BCM) monitors the Mirror Position Sensor. The BCM sets the OBDII code when the Mirror Position Sensor is not to factory specifications.

OBDII Code B12BC Ford - Mirror Position Sensor Supply Circuit Short To Ground - AutoCodes.com — B12BC Ford Code - Mirror Position Sensor Supply Circuit Short To Ground

What does this mean?

What are the Possible Causes of the DTC B12BC Ford?

Faulty Mirror Position Sensor
Mirror Position Sensor harness is open or shorted
Mirror Position Sensor circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B12BC Ford?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B12BC Ford code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B12BC Ford code?

Need more information on how to fix the B12BC Ford code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B12BC Ford code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B12BC Ford Code

1. What are the common symptoms of OBDII code B12BC in a Ford related to the Mirror Position Sensor Supply Circuit Short To Ground?

- Common symptoms may include erratic mirror movement or failure of the mirror adjustment feature.

2. What are the possible causes of the Mirror Position Sensor Supply Circuit Short To Ground code (B12BC) in a Ford?

- Possible causes can include a short circuit in the mirror wiring, a faulty mirror position sensor, or issues with the power supply to the sensor.

3. How can I diagnose the Mirror Position Sensor Supply Circuit Short To Ground issue in my Ford?

- To diagnose this issue, you may need to visually inspect the mirror wiring for any signs of damage, test the mirror position sensor for proper functionality, and check the power supply to the sensor.

4. Is it safe to drive my Ford with the B12BC code related to the Mirror Position Sensor Supply Circuit Short To Ground?

- It is generally safe to drive the vehicle with this code, but you may experience issues with adjusting the mirrors manually or electrically.

5. Can I repair the Mirror Position Sensor Supply Circuit Short To Ground issue in my Ford by myself?

- If you have experience with automotive electrical systems, you may be able to repair this issue yourself by identifying and fixing the short circuit or replacing the faulty sensor.

6. Will resetting the OBDII code B12BC related to the Mirror Position Sensor Supply Circuit Short To Ground make the problem go away?

- Resetting the code may temporarily clear the warning light, but if the underlying issue is not fixed, the code is likely to return.

7. How much does it typically cost to repair the Mirror Position Sensor Supply Circuit Short To Ground issue in a Ford?

- The cost of repairs can vary depending on the exact cause of the issue, but it may involve replacing the mirror position sensor or repairing the wiring, which can range from moderate to expensive.

8. Can extreme weather conditions affect the occurrence of the Mirror Position Sensor Supply Circuit Short To Ground code in a Ford?

- Extreme weather conditions, such as exposure to moisture or temperature fluctuations, can potentially worsen the issue by causing electrical connections to degrade or short out.

9. Are there any preventive maintenance tips to avoid encountering the Mirror Position Sensor Supply Circuit Short To Ground issue in my Ford?

- Regularly inspecting the mirror wiring for damage, keeping the electrical components clean and dry, and addressing any mirror adjustment issues promptly can help prevent this code from appearing.

10. Will ignoring the Mirror Position Sensor Supply Circuit Short To Ground code lead to more serious problems in my Ford over time?

- Ignoring this code may not immediately lead to serious problems, but it can affect the functionality of the mirror adjustment system and potentially cause inconvenience while driving.