B154B 2015 Chevrolet Silverado 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 2015 Chevrolet Silverado 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.
Code B154B 2015 Chevrolet Silverado Description
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.
What are the Possible Causes of the DTC B154B 2015 Chevrolet Silverado?
- 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 2015 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 B154B 2015 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.
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Frequently Asked Questions about B154B 2015 Chevrolet Silverado Code
1. What does the OBDII code B154B mean on a 2015 Chevrolet Silverado?
Code B154B indicates a "Passenger Mirror Internal Malfunction," meaning there is an internal fault in the passenger-side mirror assembly or its control module.
2. What are the common symptoms of code B154B in a 2015 Chevrolet Silverado?
Symptoms may include the passenger-side mirror not adjusting properly, failure of heated mirror functions, or the mirror being unresponsive to controls.
3. What causes the B154B code to appear on a 2015 Chevrolet Silverado?
This code is typically caused by a malfunction in the passenger-side mirror motor, wiring issues, or a failure in the mirror module's internal components.
4. Can a wiring issue cause the B154B code on my Silverado?
Yes, damaged or corroded wiring and connectors in the passenger mirror system can trigger this code.
5. How do I fix the B154B code on a 2015 Chevrolet Silverado?
Inspect the passenger mirror for physical damage, check the wiring and connectors for corrosion or damage, and replace the mirror assembly if the internal components are faulty.
6. Do I need to replace the entire passenger mirror to resolve the B154B code?
Not always. In some cases, cleaning or repairing the wiring and connections may fix the issue. If the mirror’s internal components are damaged, replacement may be necessary.
7. Can I still drive my Silverado with the B154B code active?
Yes, you can still drive the vehicle, but the passenger mirror functions may be limited or inoperative, which could impact visibility and safety.
8. How much does it cost to fix the B154B code on a 2015 Chevrolet Silverado?
Repair costs vary, but replacing the passenger-side mirror assembly typically ranges from $200 to $500, depending on parts and labor.
9. Does the B154B code require reprogramming after repairs?
If the mirror assembly or control module is replaced, reprogramming may be necessary to ensure proper operation.
10. Can a DIYer fix the B154B code on a Silverado, or is professional help required?
A skilled DIYer can attempt repairs by inspecting the wiring and replacing the mirror assembly if needed, but professional diagnostics may be required for complex issues.
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