AutoCodes – Chevrolet – B154B Chevrolet

B154B Chevrolet Code - Passenger Mirror Internal Malfunction

Quick Answer

The outside mirror switch and passenger window switch are on a serial data circuit with the memory seat module as the master. Common causes include Faulty Passenger Outside Rearview Mirror Motor, Passenger Outside Rearview Mirror Motor harness is open or shorted, Passenger Outside Rearview Mirror 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: B154B Chevrolet indicates Passenger Mirror Internal Malfunction.
Common causes: Common causes include Faulty Passenger Outside Rearview Mirror Motor, Passenger Outside Rearview Mirror Motor harness is open or shorted, Passenger Outside Rearview Mirror 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.

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Code Popularity 234

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 21, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B154B Chevrolet Description

The outside mirror switch and passenger window switch are on a serial data circuit with the memory seat module as the master. The mirror select and directional control switches are inputs to the memory seat module through the serial data circuit. When the memory seat module receives switch inputs from the outside mirror switch, mirror output commands are sent to the appropriate switch through the serial data circuit. The outside mirror switch and passenger window switch control the left and right outside rearview mirrors through bi-directional motor control circuits. The motor control circuits are floating while in an inactive state and the switches will apply power and ground to the control circuits as necessary to move the mirror in the commanded direction.
Mirror position is determined by both horizontal and vertical position sensors in each of the power mirrors. The outside mirror switch and passenger window switch supply a 5 V reference, low reference, and horizontal and vertical position signal circuits to these sensors. The signal circuits are referenced from 5 V by the switches and the signal circuit voltage levels represent the mirror positions. The mirror positions are sent to the memory seat module through the serial data circuit where they are stored for memory mirror operation. When the memory seat module receives a memory recall command, the memory seat module will send the go to position commands to the outside mirror switch and passenger window switch. The switches will then drive the appropriate mirror motors to the commanded position sensor settings.
The Diagnostic Trouble Code (DTC) will be set when an internal malfunction has been detected by the passenger window switch while commanding the passenger outside rearview mirror UP, DOWN, LEFT, or RIGHT.

OBDII Code B154B Chevrolet - Passenger Mirror Internal Malfunction - AutoCodes.com — B154B Chevrolet Code - Passenger Mirror Internal Malfunction

What does this mean?

What are the Possible Causes of the DTC B154B Chevrolet?

Faulty Passenger Outside Rearview Mirror Motor
Passenger Outside Rearview Mirror Motor harness is open or shorted
Passenger Outside Rearview Mirror Motor circuit poor electrical connection

How to Fix the DTC B154B Chevrolet?

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 B154B Chevrolet 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 Chevrolet Models

B154B 2014 Chevrolet Silverado — Passenger Mirror Internal Malfunction
B154B 2015 Chevrolet Silverado — Passenger Mirror Internal Malfunction
B154B 2016 Chevrolet Silverado — Passenger Mirror Internal Malfunction
B154B 2017 Chevrolet Silverado — Passenger Mirror Internal Malfunction
B154B 2018 Chevrolet Silverado — Passenger Mirror Internal Malfunction

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 B154B Chevrolet Code

1. What are the common symptoms of OBDII code B154B Chevrolet (Passenger Mirror Internal Malfunction)?

- The common symptoms include erratic movement or failure of the passenger side mirror to adjust properly.

2. What typically causes the OBDII code B154B Chevrolet to trigger?

- This code is usually triggered by a malfunction within the internal components of the passenger side mirror.

3. Is it safe to drive with the OBDII code B154B Chevrolet active?

- It is generally safe to drive with this code, but you may experience inconvenience due to the malfunctioning mirror.

4. How can I diagnose the Passenger Mirror Internal Malfunction (B154B) in a Chevrolet?

- Diagnosis involves visually inspecting the mirror for any physical damage or electronic issues. Testing the mirror's movement function can also help identify the problem.

5. Can I fix the Passenger Mirror Internal Malfunction (B154B) in a Chevrolet myself?

- Depending on the extent of the issue, you may be able to fix it yourself by replacing the mirror assembly or repairing the internal components.

6. Are there any temporary solutions to address the OBDII code B154B Chevrolet?

- A temporary solution could involve manually adjusting the mirror to a suitable position and avoiding further adjustments until the issue is resolved.

7. Should I reset the OBDII code B154B Chevrolet after fixing the passenger mirror issue?

- Yes, it is recommended to clear the code using an OBDII scanner after fixing the passenger mirror to ensure the vehicle's system recognizes the repair.

8. What is the typical cost to repair the Passenger Mirror Internal Malfunction in a Chevrolet?

- The repair cost can vary depending on the extent of the issue, but it may range from replacing the mirror assembly to repairing internal components, potentially costing a few hundred dollars.

9. Can extreme weather conditions cause the OBDII code B154B Chevrolet to appear?

- Extreme weather conditions may not directly cause this code, but they can exacerbate existing mirror issues due to temperature fluctuations or moisture.

10. How long does it usually take to repair the Passenger Mirror Internal Malfunction (B154B) in a Chevrolet?

- The repair time can vary based on the complexity of the issue and the availability of parts, but it typically takes a few hours to a day to complete the repair.