Engine-CodesGeneric – B19A9

B19A9 Code - Rear Window Motor Output Circuit Failure

Quick Answer

The B19A9 diagnostic trouble code (DTC) indicates a Rear Window Motor Output Circuit Failure. Common causes include Faulty rear window motor, Broken or damaged wiring in the rear window motor circuit, Blown fuse related to the rear window motor. 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 indicates Rear Window Motor Output Circuit Failure.
Common causes
Common causes include Faulty rear window motor, Broken or damaged wiring in the rear window motor circuit, Blown fuse related to the rear window motor.
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.
Table of contents Created and updated by William Orellana on Aug 19, 2024
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Code B19A9 Description

The B19A9 diagnostic trouble code (DTC) indicates a Rear Window Motor Output Circuit Failure. This means that there is a problem with the electrical circuit that controls the rear window motor in the vehicle. The rear window motor is responsible for moving the rear window up and down, and if the output circuit is failing, it may result in the rear window not functioning properly.

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

Common Causes of B19A9

  1. Faulty rear window motor.
  2. Broken or damaged wiring in the rear window motor circuit.
  3. Blown fuse related to the rear window motor.
  4. Corrosion or poor connections in the electrical system.
  5. Faulty rear window motor switch.

Symptoms of B19A9

  1. Rear window not moving up or down.
  2. Unusual noises coming from the rear window motor.
  3. Rear window moving slowly or intermittently.
  4. Rear window getting stuck in one position.
  5. Rear window not responding to the switch controls.

How to Fix B19A9

  1. Perform a visual inspection of the rear window motor and its wiring to check for any visible damage.
  2. Test the rear window motor with a multimeter to determine if it is functioning properly.
  3. Check and replace any blown fuses related to the rear window motor.
  4. Repair or replace any damaged wiring or connectors in the rear window motor circuit.
  5. Replace the rear window motor switch if necessary.

Cost to Fix B19A9

The cost of repairing a Rear Window Motor Output Circuit Failure can vary depending on the specific issue causing the code, the make and model of the vehicle, and the labor rates in your area. On average, the repair costs for this issue can range from $150 to $400, including parts and labor. Keep in mind that additional diagnostic time may be needed to pinpoint the exact cause of the problem, so the total cost may be higher. It's recommended to get quotes from local auto repair shops to get a more accurate estimate.

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Code B19A9 Information for Specific Makes

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 Code

1. What does the OBDII code B19A9 mean?

The B19A9 code indicates a Rear Window Motor Output Circuit Failure, meaning there is an electrical issue in the circuit controlling the rear window motor.

2. What are the common symptoms of the B19A9 code?

Symptoms include the rear window not operating (stuck open or closed), abnormal noises when trying to operate the window, or the vehicle's body control module triggering a warning.

3. What causes the B19A9 code to appear?

Common causes include a faulty rear window motor, damaged wiring or connectors in the circuit, blown fuses, or a malfunctioning body control module.

4. Can I still drive my car with the B19A9 code?

Yes, you can still drive your car, but the rear window may not function properly, which could lead to inconvenience or security concerns.

5. How do I diagnose the B19A9 code?

Start by inspecting the rear window motor, wiring, and connectors for damage or corrosion. Use a multimeter to check for proper voltage in the circuit and scan for related codes.

6. How can I fix the B19A9 code?

Repairs may include replacing the rear window motor, repairing or replacing damaged wiring or connectors, or resetting the body control module.

7. How much does it cost to fix the B19A9 code?

Costs vary depending on the issue but typically range from $150 to $400 for diagnostic and repair, with motor replacement being on the higher end.

8. Can a blown fuse cause the B19A9 code?

Yes, a blown fuse in the rear window motor circuit can trigger the B19A9 code and should be checked during diagnosis.

9. Is the B19A9 code specific to any vehicle make or model?

While it can occur in many vehicles with power rear windows, it’s most common in vehicles with advanced body control systems that monitor window operation.

10. Will clearing the B19A9 code fix the problem?

Clearing the code may temporarily turn off the warning light, but the underlying issue must be resolved to prevent the code from returning.

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