B2142 Buick 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 Buick 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.
Code B2142 Buick Description
What are the Possible Causes of the DTC B2142 Buick?
- 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 Buick?
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 Buick 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 B2142 Buick Code
What does the OBDII code B2142 mean on a Buick?
The code B2142 indicates that the outside rearview mirror has reached its limit of travel, meaning it cannot adjust further in a certain direction.
What are common symptoms of code B2142 on a Buick?
Symptoms include the inability to adjust the outside rearview mirror properly, limited mirror movement, or the mirror being stuck in one position.
What causes the B2142 code on a Buick?
Common causes include a faulty mirror motor, a mechanical obstruction in the mirror assembly, or issues with the mirror position sensor.
Can the B2142 code affect driving safety?
Yes, if the outside rearview mirror cannot be adjusted properly, it may impair visibility and compromise safe driving.
How can I fix the B2142 code on a Buick?
Inspect the mirror for physical damage or obstructions, check the mirror motor for functionality, and replace the position sensor if it's faulty.
Can a broken mirror assembly trigger the B2142 code?
Yes, physical damage to the mirror assembly can prevent proper movement and trigger this code.
How do I reset the B2142 code on a Buick after repairs?
After completing the necessary repairs, use an OBDII scanner to clear the code from the vehicle’s computer system.
Is the mirror position sensor a common failure point for the B2142 code?
Yes, a malfunctioning mirror position sensor is a common cause of this code, as it misreports the mirror's position.
How much does it cost to repair a B2142 code on a Buick?
Repair costs can vary, but replacing a mirror motor or position sensor typically costs between $100 and $300, depending on parts and labor.
Can I drive with the B2142 code active on my Buick?
While the car remains drivable, it’s recommended to address the issue promptly to ensure proper mirror functionality and safe visibility.
Discuss the causes and fixes for B2142 Buick OBDII Code
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