AutoCodes – Generic – B1542

B1542 Code - Mirror Driver Switch Assembly Circuit Short To Ground

Quick Answer

The Body Control Module (BCM) monitors the Mirror Driver Switch Assembly. Common causes include Faulty Mirror Driver Switch Assembly, Mirror Driver Switch Assembly harness is open or shorted, Mirror Driver Switch Assembly 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: B1542 indicates Mirror Driver Switch Assembly Circuit Short To Ground.
Common causes: Common causes include Faulty Mirror Driver Switch Assembly, Mirror Driver Switch Assembly harness is open or shorted, Mirror Driver Switch Assembly 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 5,870

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 May 02, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1542 Description

The Body Control Module (BCM) monitors the Mirror Driver Switch Assembly. The BCM sets the OBDII code when the Mirror Driver Switch Assembly is not to factory specifications.

OBDII Code B1542 - Mirror Driver Switch Assembly Circuit Short To Ground - AutoCodes.com — B1542 Code - Mirror Driver Switch Assembly Circuit Short To Ground

What does this mean?

What are the Possible Causes of the DTC B1542?

Faulty Mirror Driver Switch Assembly
Mirror Driver Switch Assembly harness is open or shorted
Mirror Driver Switch Assembly circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B1542?

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 B1542 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 B1542 code?

Need more information on how to fix the B1542 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1542 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1542 Buick — Oil Temperature Circuit Short To Ground
B1542 Cadillac — Oil Temperature Circuit Short To Ground
B1542 Chevrolet — Oil Temperature Circuit Short To Ground
B1542 GMC — Oil Temperature Circuit Short To Ground

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 B1542 Code

1. What are the common symptoms of OBDII code B1542?

- Common symptoms include malfunctioning power mirrors, non-responsive mirror adjustment controls, and the mirror switch not working properly.

2. What does the OBDII code B1542 Mirror Driver Switch Assembly Circuit Short To Ground mean?

- This code indicates that there is a short circuit to ground in the mirror driver switch assembly circuit.

3. What are the possible causes of OBDII code B1542?

- Possible causes include damaged wiring in the mirror switch circuit, a faulty mirror switch assembly, or a short circuit in the circuit.

4. How can I diagnose the issue related to OBDII code B1542?

- You can start by visually inspecting the wiring and connections in the mirror switch assembly circuit. Using a multimeter to test for continuity and shorts can also help pinpoint the issue.

5. Can I continue driving my vehicle with OBDII code B1542 present?

- While the vehicle may still be operable, it is recommended to address the issue promptly to ensure the proper functioning of the mirror switch assembly and related systems.

6. How can I repair OBDII code B1542 Mirror Driver Switch Assembly Circuit Short To Ground?

- Repair options may include repairing or replacing damaged wiring, replacing the mirror switch assembly, or addressing any short circuits in the circuit.

7. Is it possible to reset the OBDII code B1542 without fixing the underlying issue?

- While clearing the code may temporarily turn off the warning light, the issue will likely persist until the root cause is identified and repaired.

8. Are there any DIY tips for troubleshooting OBDII code B1542?

- DIY troubleshooting tips include checking for loose or damaged connections, inspecting the mirror switch assembly for visible damage, and testing the circuit for continuity.

9. Can a professional mechanic help with diagnosing and repairing OBDII code B1542?

- Yes, a qualified mechanic can use specialized tools and knowledge to diagnose the issue accurately and perform the necessary repairs to fix the code.

10. How can I prevent OBDII code B1542 Mirror Driver Switch Assembly Circuit Short To Ground in the future?

- Regularly inspecting and maintaining the mirror switch assembly circuit can help prevent issues like short circuits and ensure the proper functioning of the system.