AutoCodes – Lincoln – B12E8 Lincoln

B12E8 Lincoln Code - Liftgate/Tailgate Control/Release Switch

Quick Answer

The Body Control Module (BCM) monitors the Liftgate/Tailgate Control/Release Switch. Common causes include Faulty Liftgate/Tailgate Control/Release Switch, Liftgate/Tailgate Control/Release Switch harness is open or shorted, Liftgate/Tailgate Control/Release Switch circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: B12E8 Lincoln indicates Liftgate/Tailgate Control/Release Switch.
Common causes: Common causes include Faulty Liftgate/Tailgate Control/Release Switch, Liftgate/Tailgate Control/Release Switch harness is open or shorted, Liftgate/Tailgate Control/Release Switch circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 820

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

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

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B12E8 Lincoln Description

The Body Control Module (BCM) monitors the Liftgate/Tailgate Control/Release Switch. The BCM sets the OBDII code when the Liftgate/Tailgate Control/Release Switch is not to factory specifications.

OBDII Code B12E8 Lincoln - Liftgate/Tailgate Control/Release Switch - AutoCodes.com — B12E8 Lincoln Code - Liftgate/Tailgate Control/Release Switch

What does this mean?

What are the Possible Causes of the DTC B12E8 Lincoln?

Faulty Liftgate/Tailgate Control/Release Switch
Liftgate/Tailgate Control/Release Switch harness is open or shorted
Liftgate/Tailgate Control/Release Switch circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B12E8 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 does this mean?

Code Tech Notes

B12E8:11 Liftgate/Tailgate Control/Release Switch: Circuit Short To Ground
B12E8:23 Liftgate/Tailgate Control/Release Switch: Signal Stuck Low

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B12E8 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.

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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 B12E8 Lincoln Code

1. What does the OBDII code B12E8 indicate on a Lincoln?

- The code B12E8 indicates a problem with the liftgate/tailgate control/release switch circuit, suggesting that the switch may not be functioning correctly.

2. What are common symptoms of code B12E8 in a Lincoln?

- Common symptoms include the liftgate or tailgate not opening or closing properly, unresponsive tailgate release button, and possibly an illuminated warning light on the dashboard.

3. What could cause the B12E8 code to appear on a Lincoln?

- Potential causes include a faulty liftgate/tailgate release switch, damaged wiring or connectors in the switch circuit, or a malfunctioning body control module.

4. How can I diagnose the problem causing the B12E8 code on a Lincoln?

- Diagnosis should start with a visual inspection of the switch and its connections for any obvious damage or loose wires. Use a multimeter to check for continuity in the switch and wiring. Also, scan the vehicle with an OBDII scanner to check for additional codes that could provide more clues.

5. What steps should be taken to repair the issue associated with code B12E8 on a Lincoln?

- Repairing this issue may involve replacing the faulty liftgate/tailgate release switch, repairing or replacing damaged wiring, or in some cases, reprogramming or replacing the body control module if it's determined to be the fault.

6. Is it safe to drive a Lincoln with the B12E8 code?

- While it may be safe to drive, the functionality of the liftgate or tailgate will be compromised, which could be inconvenient and might pose security or utility issues depending on what you carry in your vehicle.

7. Can a faulty liftgate/tailgate release switch drain the battery in a Lincoln?

- Yes, if the switch is faulty and stuck in the "on" position, it can potentially drain the battery by continuously drawing power, even when the vehicle is off.

8. What tools are needed to fix the liftgate/tailgate release switch if it triggers a B12E8 code?

- Tools needed might include a multimeter for electrical testing, basic hand tools to access and replace the switch, and possibly a diagnostic scanner to clear the code and perform further tests.

9. How long does it typically take to resolve a B12E8 code in a Lincoln?

- The time can vary depending on the diagnosis. Simple switch replacements can take a few hours, while troubleshooting and repairing complex wiring issues or control module problems might take longer.