AutoCodesGeneric – B1641

B1641 Code - Mirror Passenger Left Circuit Short To Battery

Quick Answer

The Body Control Module (BCM) monitors the Mirror Passenger Motor. Common causes include Faulty Mirror Passenger Motor, Mirror Passenger Motor harness is open or shorted, Mirror Passenger 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
B1641 indicates Mirror Passenger Left Circuit Short To Battery.
Common causes
Common causes include Faulty Mirror Passenger Motor, Mirror Passenger Motor harness is open or shorted, Mirror Passenger 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 4,333
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 24, 2019
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Code B1641 Description

The Body Control Module (BCM) monitors the Mirror Passenger Motor. The BCM sets the OBDII code when the Mirror Passenger Motor is not to factory specifications.
OBDII Code B1641 - Mirror Passenger Left Circuit Short To Battery - AutoCodes.com
B1641 Code - Mirror Passenger Left Circuit Short To Battery

What are the Possible Causes of the DTC B1641?

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

How to Fix the DTC B1641?

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 B1641 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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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 B1641 Code

1. What does the OBDII code B1641 mean?

B1641 indicates a short to battery in the electrical circuit for the passenger-side mirror.

2. What are the common symptoms of code B1641?

Symptoms include the passenger-side mirror not adjusting, being stuck in one position, or operating erratically.

3. What causes the B1641 code to appear?

The code is caused by a short to battery in the mirror’s wiring, a faulty mirror motor, damaged connectors, or a malfunctioning control module.

4. How can I diagnose code B1641?

Start by visually inspecting the wiring and connectors for damage, test the mirror motor for continuity, and check for voltage at the control switch.

5. Can I still drive my car with a B1641 code?

Yes, the code typically affects only the mirror's operation and does not impact drivability.

6. How do I fix the B1641 code?

Repairs may involve repairing or replacing damaged wiring, connectors, or the mirror motor, or recalibrating the control module.

7. Is the B1641 code specific to certain vehicles?

Yes, it may be more common in certain makes and models, but it generally applies to vehicles with electrically adjustable mirrors.

8. How much does it cost to repair a B1641 code?

Costs depend on the issue, ranging from $50 for simple wiring fixes to $300+ if the mirror assembly or control module needs replacement.

9. Can I clear the B1641 code without fixing the issue?

Clearing the code without addressing the root cause is not recommended, as the issue will likely persist or return.

10. How do I prevent the B1641 code from occurring?

Regularly inspect and maintain the mirror's wiring and connectors to prevent damage or wear that could lead to a short.

Discuss the causes and fixes for B1641 OBDII Code

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