AutoCodes – Lincoln – B11E9 Lincoln

B11E9 Lincoln Code - Left Rear Door Ajar Switch Circuit Open

Quick Answer

The Body Control Module (BCM) monitors the Left Rear Door Ajar Switch. Common causes include Faulty Left Rear Door Ajar Switch, Left Rear Door Ajar Switch harness is open or shorted, Left Rear Door Ajar 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: B11E9 Lincoln indicates Left Rear Door Ajar Switch Circuit Open.
Common causes: Common causes include Faulty Left Rear Door Ajar Switch, Left Rear Door Ajar Switch harness is open or shorted, Left Rear Door Ajar 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 797

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Basic DIY (1 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 19, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B11E9 Lincoln Description

The Body Control Module (BCM) monitors the Left Rear Door Ajar Switch. The BCM sets the OBDII code when the Left Rear Door Ajar Switch is not to factory specifications.

OBDII Code B11E9 Lincoln - Left Rear Door Ajar Switch Circuit Open - AutoCodes.com — B11E9 Lincoln Code - Left Rear Door Ajar Switch Circuit Open

What does this mean?

What are the Possible Causes of the DTC B11E9 Lincoln?

Faulty Left Rear Door Ajar Switch
Left Rear Door Ajar Switch harness is open or shorted
Left Rear Door Ajar Switch circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B11E9 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 B11E9 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 B11E9 Lincoln code?

Need more information on how to fix the B11E9 Lincoln code? Get Access to Factory Service Manuals

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 B11E9 Lincoln Code

1. What are the common symptoms of OBDII code B11E9 Lincoln (Left Rear Door Ajar Switch Circuit Open)?

- The common symptoms include the interior lights staying on, door ajar warning on the dashboard, and potential issues with power door locks.

2. What can cause the OBDII code B11E9 Lincoln to appear?

- The code may be triggered by a faulty left rear door ajar switch, damaged wiring, or a poor connection in the circuit.

3. How can I diagnose the issue related to the Left Rear Door Ajar Switch Circuit Open code?

- You can start by visually inspecting the wiring and switch in the left rear door, checking for any signs of damage or corrosion. Using a multimeter to test the switch's continuity can also help pinpoint the problem.

4. Can I drive my Lincoln with the B11E9 code active?

- It is generally safe to drive your vehicle with this code, but it is recommended to address the issue promptly to avoid potential electrical problems or draining the battery.

5. Is it possible to reset the B11E9 code without fixing the underlying issue?

- Resetting the code without fixing the problem will likely cause it to reappear once the issue persists. It's best to diagnose and repair the root cause to prevent further complications.

6. What are some repair tips for addressing the Left Rear Door Ajar Switch Circuit Open code?

- Try cleaning the door switch contacts, ensuring proper alignment of the switch, and repairing any damaged wiring or connectors to resolve the issue.

7. Can extreme weather conditions affect the left rear door ajar switch and trigger the B11E9 code?

- Yes, extreme temperatures or moisture can impact the switch's functionality or cause corrosion in the wiring, leading to the circuit open fault.

8. How much does it typically cost to repair the Left Rear Door Ajar Switch Circuit Open issue?

- The cost of repair can vary depending on the extent of the problem, but it may involve DIY solutions like cleaning and reconnecting components or seeking professional assistance for more complex issues.

9. Are there any recalls or technical service bulletins related to the B11E9 code in Lincoln vehicles?

- It's recommended to check with a Lincoln dealership or visit the manufacturer's website to see if there are any relevant recalls or service bulletins addressing this specific OBDII code.

10. Can the B11E9 code be related to other door sensor issues in the Lincoln vehicle?

- While the code specifically indicates a fault in the left rear door ajar switch circuit, it's possible for similar issues to occur in other door sensors, requiring individual diagnosis and repair.