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B19A9 Lincoln Code - Rear Window Motor Output Circuit Failure

Quick Answer

The B19A9 code is a diagnostic trouble code (DTC) specific to Lincoln vehicles, indicating a failure in the rear window motor output circuit. Common causes include Faulty rear window motor, Damaged or frayed wiring in the rear window motor circuit, Corroded or loose electrical connectors. 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
B19A9 Lincoln indicates Rear Window Motor Output Circuit Failure.
Common causes
Common causes include Faulty rear window motor, Damaged or frayed wiring in the rear window motor circuit, Corroded or loose electrical connectors.
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.
What is this?
Table of contents Created and updated by William Orellana on Oct 02, 2024
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Code B19A9 Lincoln Description

The B19A9 code is a diagnostic trouble code (DTC) specific to Lincoln vehicles, indicating a failure in the rear window motor output circuit. This code typically arises when the vehicle's onboard diagnostic system detects an abnormality in the electrical signals sent to or from the rear window motor. The rear window motor is responsible for the operation of the rear window lift mechanism, allowing the window to move up and down.

OBDII Code B19A9 Lincoln - Rear Window Motor Output Circuit Failure
B19A9 Lincoln Code - Rear Window Motor Output Circuit Failure

Common Causes of B19A9 Lincoln

  1. Faulty rear window motor.
  2. Damaged or frayed wiring in the rear window motor circuit.
  3. Corroded or loose electrical connectors.
  4. Malfunctioning body control module (BCM) affecting the rear window operation.
  5. Physical obstruction or mechanical failure in the window lift mechanism.

Symptoms of B19A9 Lincoln

  1. Rear window does not respond to up/down commands.
  2. Intermittent operation of the rear window (works sporadically).
  3. Unusual noises (grinding or clicking) when attempting to operate the rear window.
  4. Rear window moves slowly or hesitates during operation.
  5. Warning lights or messages on the dashboard related to window operation.

How to Fix B19A9 Lincoln

  1. Diagnostic Assessment: Begin by using a professional OBD-II scanner to confirm the B19A9 code and check for any additional codes that may provide further insight into the problem.
  2. Visual Inspection: Inspect the wiring harness and connectors associated with the rear window motor for signs of damage, corrosion, or loose connections. Repair or replace any damaged components as necessary.
  3. Test the Rear Window Motor: Using a multimeter, test the voltage at the rear window motor while operating the switch. If the motor does not receive the correct voltage, further investigation into the circuit is required.
  4. Replace the Rear Window Motor: If the motor is found to be faulty, remove the old motor and install a new one, ensuring all connections are secure and free of corrosion.
  5. Reprogram or Reset the BCM (if necessary): If the body control module is suspected to be malfunctioning, it may need to be reprogrammed or replaced, depending on the diagnostic results.

Cost to Fix B19A9 Lincoln

** The cost to repair the B19A9 code can vary significantly based on the specific issue identified during diagnosis. Generally, the cost for parts and labor can range from $150 to $600. For instance, a new rear window motor may cost between $50 to $200, while labor costs can range from $80 to $150 per hour. The total repair time may take 1 to 3 hours, depending on the complexity of the issue.

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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 B19A9 Lincoln Code

1. What are the common symptoms of OBDII code B19A9 in a Lincoln indicating a Rear Window Motor Output Circuit Failure?

The common symptoms include the rear window not responding to the switch, unusual noises from the rear window motor, or the window getting stuck in one position.

2. What are the possible causes of the B19A9 code in a Lincoln related to a rear window motor output circuit failure?

The code can be triggered by issues such as a faulty rear window motor, damaged wiring or connectors in the output circuit, or a problem with the rear window control module.

3. How can I diagnose the B19A9 code in my Lincoln to confirm a rear window motor output circuit failure?

You can use a diagnostic scanner to read the code and perform a detailed inspection of the rear window motor, wiring, and connectors to identify any visible damage or issues.

4. Can a DIY enthusiast repair the B19A9 code indicating a rear window motor output circuit failure in a Lincoln?

While basic troubleshooting like checking for loose connections or damaged wiring can be done by DIY enthusiasts, more complex repairs involving the rear window motor or control module may require professional assistance.

5. What are some recommended repair tips for resolving the B19A9 code in a Lincoln caused by a rear window motor output circuit failure?

Ensure all electrical connections are secure, inspect for any signs of damage in the wiring, consider replacing the rear window motor if necessary, and reset the OBDII system after repairs.

6. Is it safe to continue driving my Lincoln with the B19A9 code triggered by a rear window motor output circuit failure?

It is not recommended to drive the vehicle with this issue as it can lead to further damage or safety concerns, such as the rear window getting stuck in an open or closed position.

7. Can weather conditions or environmental factors contribute to the B19A9 code in a Lincoln indicating a rear window motor output circuit failure?

Extreme weather conditions or water exposure can potentially damage the rear window motor or its circuit, leading to the triggering of the B19A9 trouble code.

8. How much can I expect to pay for repairing the B19A9 code in a Lincoln due to a rear window motor output circuit failure?

The cost of repairs can vary based on the specific issue, parts needed, and labor rates. It is advisable to get a diagnostic assessment from a professional to determine the exact repair cost.

9. Are there any preventive maintenance measures I can take to avoid encountering the B19A9 code related to a rear window motor output circuit failure in my Lincoln?

Regularly inspecting the rear window operation, keeping the window clean, and addressing any unusual noises or issues promptly can help prevent the occurrence of this code.

10. How long does it typically take to repair the B19A9 code indicating a rear window motor output circuit failure in a Lincoln?

The repair time can vary depending on the extent of the issue and the availability of parts. Simple fixes like reconnecting wires may take a short time, while motor replacement or module repairs could take longer.

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