AutoCodes – Lincoln – B1C12 Lincoln

B1C12 Lincoln Code - Passenger Up/Down Mirror Motor Circuit Short To Ground

Quick Answer

The Passenger Door Module (PDM) monitors the Passenger Up/Down Mirror Motor. Common causes include Faulty Passenger Up/Down Mirror Motor, Passenger Up/Down Mirror Motor harness is open or shorted, Passenger Up/Down Mirror Motor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
B1C12 Lincoln indicates Passenger Up/Down Mirror Motor Circuit Short To Ground.
Common causes
Common causes include Faulty Passenger Up/Down Mirror Motor, Passenger Up/Down Mirror Motor harness is open or shorted, Passenger Up/Down Mirror Motor circuit poor electrical connection.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code Popularity 491
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 27, 2019
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Code B1C12 Lincoln Description

The Passenger Door Module (PDM) monitors the Passenger Up/Down Mirror Motor. The PDM sets the OBDII code when the Passenger Up/Down Mirror Motor is not to factory specifications.
OBDII Code B1C12 Lincoln - Passenger Up/Down Mirror Motor Circuit Short To Ground - AutoCodes.com
B1C12 Lincoln Code - Passenger Up/Down Mirror Motor Circuit Short To Ground

What are the Possible Causes of the DTC B1C12 Lincoln?

  • Faulty Passenger Up/Down Mirror Motor
  • Passenger Up/Down Mirror Motor harness is open or shorted
  • Passenger Up/Down Mirror Motor circuit poor electrical connection
  • Faulty Passenger Door Module (PDM)

How to Fix the DTC B1C12 Lincoln?

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 B1C12 Lincoln 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 B1C12 Lincoln code?

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Need Help with the Code?

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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 B1C12 Lincoln Code

1. What are common symptoms of OBDII code B1C12 in a Lincoln related to the Passenger Up/Down Mirror Motor Circuit Short To Ground?

- Common symptoms include inoperative passenger side mirror movement, erratic mirror movement, or a message displayed on the dashboard indicating a fault with the mirror motor circuit.

2. What are possible causes of the B1C12 OBDII code in a Lincoln?

- The code B1C12 can be caused by a short to ground in the passenger side mirror motor circuit, a faulty mirror motor, damaged wiring or connectors, or a malfunctioning mirror control switch.

3. How can I diagnose the B1C12 code in my Lincoln?

- To diagnose the B1C12 code, you can use a diagnostic scanner to retrieve the specific fault code, visually inspect the mirror motor circuit for any visible damage, test the mirror motor and control switch for proper functionality, and check for continuity in the wiring.

4. Can I repair the B1C12 code in my Lincoln myself?

- Depending on your level of automotive repair experience, you may be able to repair the B1C12 code yourself by replacing the faulty mirror motor, repairing damaged wiring or connectors, or addressing the short to ground in the mirror motor circuit. However, if you are unsure, it is recommended to seek professional assistance.

5. Are there any quick tips to troubleshoot the B1C12 code in my Lincoln?

- Quick tips to troubleshoot the B1C12 code include checking the mirror fuse, ensuring the mirror control switch is functioning correctly, inspecting the mirror wiring for any visible damage, and testing the mirror motor for proper operation.

6. What is the typical cost to repair the B1C12 code in a Lincoln at a dealership or mechanic?

- The cost to repair the B1C12 code can vary depending on the specific issue causing the fault. Typically, the cost may range from $100 to $300 for parts and labor at a dealership or mechanic.

7. Can the B1C12 code in my Lincoln cause any other electrical issues in the vehicle?

- While the B1C12 code specifically relates to the Passenger Up/Down Mirror Motor Circuit Short To Ground, electrical issues in the mirror circuit can sometimes affect other systems in the vehicle. It is important to address the code promptly to prevent any further electrical problems.

8. Is it safe to drive my Lincoln with the B1C12 OBDII code present?

- It is generally safe to drive your Lincoln with the B1C12 code related to the mirror motor circuit. However, it is recommended to address the issue as soon as possible to ensure proper functionality of the passenger side mirror.

9. How long does it typically take to repair the B1C12 code in a Lincoln?

- The repair time for the B1C12 code can vary depending on the exact cause of the fault. In general, repairing the mirror motor circuit or replacing the mirror motor may take around 1-2 hours, but additional diagnostic time may be needed.

10. Can extreme weather conditions or water exposure contribute to the B1C12 OBDII code in a Lincoln?

- Yes, extreme weather conditions or water exposure can potentially contribute to the B1C12 code if moisture or corrosion affects the mirror motor circuit components. It is advisable to protect the mirror circuit from such conditions to prevent the occurrence of the fault code.

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