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Engine-Codes – Generic – B164B

B164B Code - Driver Mirror Signal Lamp Control Circuit Low

Quick Answer

The B164B diagnostic trouble code (DTC) indicates a problem with the driver mirror signal lamp control circuit being detected as low. Common causes include Faulty wiring or connectors in the driver mirror signal lamp circuit, Defective driver mirror signal lamp, Malfunctioning control module responsible for the signal lamp. 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
B164B indicates Driver Mirror Signal Lamp Control Circuit Low.
Common causes
Common causes include Faulty wiring or connectors in the driver mirror signal lamp circuit, Defective driver mirror signal lamp, Malfunctioning control module responsible for the signal lamp.
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 Sep 07, 2024
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Code B164B Description

The B164B diagnostic trouble code (DTC) indicates a problem with the driver mirror signal lamp control circuit being detected as low. In simpler terms, this code is signaling that there is a fault in the circuit that controls the signal lamp on the driver's side mirror of the vehicle. The signal lamp on the mirror is an important safety feature that provides visibility to other drivers when the vehicle is turning or changing lanes.

OBDII Code B164B - Driver Mirror Signal Lamp Control Circuit Low
B164B Code - Driver Mirror Signal Lamp Control Circuit Low

Common Causes of B164B

  1. Faulty wiring or connectors in the driver mirror signal lamp circuit
  2. Defective driver mirror signal lamp
  3. Malfunctioning control module responsible for the signal lamp
  4. Poor electrical connection in the circuit
  5. Water damage or corrosion affecting the circuit components

Symptoms of B164B

  1. Driver mirror signal lamp not working
  2. Dim or flickering driver mirror signal lamp
  3. Dashboard warning light indicating an issue with the signal lamp
  4. Electrical issues with other components in the vehicle

How to Fix B164B

  1. Begin by visually inspecting the wiring, connectors, and the driver mirror signal lamp for any visible damage or corrosion.
  2. Use a multimeter to test the continuity of the wiring and check for any open circuits or shorts.
  3. Test the driver mirror signal lamp by supplying power directly to it to determine if it is functioning correctly.
  4. Check the control module for any fault codes and ensure it is receiving the proper signals to control the signal lamp.
  5. If necessary, replace any faulty wiring, connectors, the driver mirror signal lamp, or the control module to resolve the issue.

Cost to Fix B164B

The cost of repairing the driver mirror signal lamp control circuit low issue can vary depending on the specific cause of the problem and the parts needed for the repair. On average, the cost of parts for this repair can range from $50 to $200, while the labor costs can range from $100 to $300. Therefore, the total cost of the repair could be anywhere from $150 to $500. It's important to note that the actual cost may vary based on the location of the repair shop, the make and model of the vehicle, and the extent of the damage. It's recommended to get a specific quote from a trusted auto repair shop before proceeding with the repair.

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Code B164B 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 B164B Code

What does OBDII code B164B mean?

OBDII code B164B indicates a problem with the driver mirror signal lamp control circuit, specifically that the circuit is registering a low voltage or current.

What are common symptoms of the B164B code?

Common symptoms include a non-functioning driver side mirror turn signal, warning lights on the dashboard, and potential issues with other mirror functions.

What could cause the B164B code to trigger?

Causes may include a faulty driver mirror signal lamp, damaged wiring or connectors in the control circuit, or issues with the vehicle's body control module (BCM).

How can I diagnose the B164B code?

To diagnose the B164B code, check the driver mirror signal lamp for any visible damage, inspect the wiring and connectors for corrosion or breaks, and test the voltage at the control circuit using a multimeter.

What repairs are typically needed for a B164B code?

Repairs may involve replacing a faulty driver mirror signal lamp, repairing damaged wiring or connectors, or potentially replacing the BCM if it is found to be malfunctioning.

Can I drive my vehicle with the B164B code?

While you can drive your vehicle, it is advisable to address the issue as it can affect your visibility and safety, especially if the signal lamp is not working.

How can I prevent the B164B code from occurring in the future?

Regular maintenance checks on your vehicle’s electrical components and addressing any issues with the mirrors or lighting promptly can help prevent the recurrence of the B164B code.

Is B164B a serious issue?

While not critical, it is important to address the B164B code as it affects the functionality of your turn signals, which are essential for safe driving.

Will clearing the code resolve the issue?

Clearing the code may temporarily turn off the warning light, but if the underlying issue is not fixed, the code will likely return. It is important to diagnose and repair the root cause.

Discuss the causes and fixes for B164B OBDII Code

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