AutoCodes – Chevrolet – B154A 2016 Chevrolet Silverado

B154A 2016 Chevrolet Silverado Code - Driver 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 Driver Outside Rearview Mirror Motor, Driver Outside Rearview Mirror Motor harness is open or shorted, Driver 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: B154A 2016 Chevrolet Silverado indicates Driver Mirror Internal Malfunction.
Common causes: Common causes include Faulty Driver Outside Rearview Mirror Motor, Driver Outside Rearview Mirror Motor harness is open or shorted, Driver 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 198

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 B154A 2016 Chevrolet Silverado 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 outside rearview mirror switch while commanding the driver outside rearview mirror UP, DOWN, LEFT, or RIGHT.

OBDII Code B154A 2016 Chevrolet Silverado - Driver Mirror Internal Malfunction - AutoCodes.com — B154A 2016 Chevrolet Silverado Code - Driver Mirror Internal Malfunction

What does this mean?

What are the Possible Causes of the DTC B154A 2016 Chevrolet Silverado?

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

How to Fix the DTC B154A 2016 Chevrolet Silverado?

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 B154A 2016 Chevrolet Silverado 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 B154A 2016 Chevrolet Silverado code?

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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 B154A 2016 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code B154A in a 2016 Chevrolet Silverado?

The common symptoms of code B154A include erratic movement or failure of the driver-side mirror, loss of power mirror functionality, and malfunction indicator lights on the dashboard.

2. What does the OBDII code B154A indicate in a 2016 Chevrolet Silverado?

Code B154A points to a driver mirror internal malfunction in the 2016 Chevrolet Silverado, signaling an issue with the driver-side mirror's internal components.

3. What are the possible causes of OBDII code B154A in a 2016 Chevrolet Silverado?

The potential causes of code B154A include a faulty driver-side mirror motor, damaged mirror wiring, a defective mirror control switch, or a problem with the mirror module.

4. How can I diagnose OBDII code B154A in my 2016 Chevrolet Silverado?

To diagnose code B154A, you can visually inspect the driver-side mirror for any visible damage, test the mirror controls for proper functionality, and use an OBDII scanner to retrieve the specific error codes.

5. Is it safe to drive my 2016 Chevrolet Silverado with OBDII code B154A active?

While driving with code B154A may not pose an immediate safety risk, it is recommended to address the issue promptly to ensure proper operation of the driver-side mirror and related systems.

6. Can I repair OBDII code B154A in my 2016 Chevrolet Silverado myself?

Depending on your technical skills and available tools, you may be able to repair code B154A yourself by replacing the faulty mirror components or addressing the wiring issues. However, professional assistance is recommended for complex repairs.

7. How much does it cost to fix OBDII code B154A in a 2016 Chevrolet Silverado?

The cost of repairing code B154A can vary depending on the specific cause of the issue, the labor rates in your area, and whether you choose to address the problem yourself or seek professional help. It's advisable to obtain quotes from reputable mechanics.

8. Can a malfunctioning driver-side mirror affect other systems in my 2016 Chevrolet Silverado?

Yes, a malfunctioning driver-side mirror can impact other systems in your vehicle, such as the power mirror controls, mirror heating function (if equipped), and potentially the overall electrical system.

9. Are there any recalls or technical service bulletins related to OBDII code B154A in a 2016 Chevrolet Silverado?

It's recommended to check with Chevrolet or authorized service centers for any recalls or technical service bulletins related to code B154A in the 2016 Silverado, as manufacturers may release updates or repair instructions for known issues.

10. How can I prevent OBDII code B154A from recurring in my 2016 Chevrolet Silverado?

To prevent code B154A from recurring, regularly inspect and maintain your vehicle's mirrors, avoid excessive force when adjusting the mirrors, and address any electrical issues promptly to prevent damage to the mirror components.