AutoCodes – Chevrolet – B2142 Chevrolet

B2142 Chevrolet Code - Outside Rearview Mirror Reached Limit Of Travel

Quick Answer

Outside rearview mirror switch supplies inputs to Memory Mirror Module (MMM) to drive outside rearview mirrors horizontal and vertical motors. Common causes include Faulty Outside Rearview Mirror Switch, Outside Rearview Mirror Switch harness is open or shorted, Outside Rearview Mirror Switch 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: B2142 Chevrolet indicates Outside Rearview Mirror Reached Limit Of Travel.
Common causes: Common causes include Faulty Outside Rearview Mirror Switch, Outside Rearview Mirror Switch harness is open or shorted, Outside Rearview Mirror Switch 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 577

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 Sep 19, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B2142 Chevrolet Description

Outside rearview mirror switch supplies inputs to Memory Mirror Module (MMM) to drive outside rearview mirrors horizontal and vertical motors. Outside rearview mirror switch must be in either L or R position in order to operate outside rearview mirror. When outside rearview mirror switch is actuated, the battery voltage input signal and the ground input signal is sent to MMM. When MMM recognizes input combination, it moves the appropriate mirror to the requested direction. If MMM does not recognize input combination as a valid input, it ignores combination and does not move outside rearview mirror.

OBDII Code B2142 Chevrolet - Outside Rearview Mirror Reached Limit Of Travel - AutoCodes.com — B2142 Chevrolet Code - Outside Rearview Mirror Reached Limit Of Travel

What does this mean?

What are the Possible Causes of the DTC B2142 Chevrolet?

Faulty Outside Rearview Mirror Switch
Outside Rearview Mirror Switch harness is open or shorted
Outside Rearview Mirror Switch circuit poor electrical connection
Faulty Memory Mirror Module (MMM)

How to Fix the DTC B2142 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 B2142 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.

Need more information about the B2142 Chevrolet code?

Need more information on how to fix the B2142 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2142 Chevrolet code diagnosed by a professional: Find a repair shop in your area

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 B2142 Chevrolet Code

1. What does the OBDII code B2142 mean on a Chevrolet?

B2142 indicates that the outside rearview mirror has reached its limit of travel, meaning the mirror cannot move further in one or more directions.

2. What are the common symptoms of the B2142 code?

Symptoms include limited or no movement of the side mirror, grinding or clicking noises when adjusting the mirror, or the mirror becoming stuck in one position.

3. What causes the B2142 code on a Chevrolet?

This code is typically caused by a malfunctioning mirror motor, a broken or jammed mirror assembly, wiring issues, or a problem with the mirror control switch.

4. Can the B2142 code damage my vehicle?

No, it usually does not cause damage to the vehicle, but it may limit your ability to adjust the mirror for optimal visibility, which can impact safety.

5. How do I diagnose the B2142 code?

Start by inspecting the mirror assembly for damage, checking the wiring and connectors for loose or damaged connections, and testing the mirror motor and control switch functionality.

6. Can the B2142 code be fixed without replacing the mirror?

In some cases, yes. Cleaning or repairing the wiring, resetting the mirror's position, or addressing minor mechanical obstructions may resolve the issue without full replacement.

7. How much does it cost to fix a B2142 code?

Repair costs vary depending on the issue. Replacing a mirror motor or assembly can cost between $150 and $500, while fixing wiring or minor issues may be much cheaper.

8. Can I reset the B2142 code without repairing the issue?

Clearing the code without addressing the root problem may temporarily remove it, but the code is likely to return if the underlying issue isnâ€™t resolved.

9. Is it safe to drive with a B2142 code?

Yes, it is usually safe to drive, but if the mirror is stuck in an improper position, it could compromise your visibility and driving safety.

10. Can I fix the B2142 code myself?

If you have basic mechanical and electrical skills, you might be able to fix issues like loose wiring or a stuck mirror. For more complex problems, professional assistance is recommended.