AutoCodesGeneric – B19A9

B19A9 Code - Rear Window Motor Output Circuit Failure

Quick Answer

The Body Control Module (BCM) monitors the Rear Window Motor. Common causes include Faulty Rear Window Motor, Rear Window Motor harness is open or shorted, Rear Window 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
B19A9 indicates Rear Window Motor Output Circuit Failure.
Common causes
Common causes include Faulty Rear Window Motor, Rear Window Motor harness is open or shorted, Rear Window 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 1,012
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 04, 2019
💬 Need more help? Ask Coddy for instant answers — it's free!

Code B19A9 Description

The Body Control Module (BCM) monitors the Rear Window Motor. The BCM sets the OBDII code when the Rear Window Motor is not to factory specifications.
OBDII Code B19A9 - Rear Window Motor Output Circuit Failure - AutoCodes.com
B19A9 Code - Rear Window Motor Output Circuit Failure

What are the Possible Causes of the DTC B19A9?

  • Faulty Rear Window Motor
  • Rear Window Motor harness is open or shorted
  • Rear Window Motor circuit poor electrical connection
  • Faulty Body Control Module (BCM)

How to Fix the DTC B19A9?

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 B19A9 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 B19A9 code?

Need more information on how to fix the B19A9 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B19A9 code diagnosed by a professional: Find a repair shop in your area

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.

Discuss the causes and fixes for B19A9 OBDII Code

Code B19A9 comments

No comments found for this page.

AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play