AutoCodes – Buick – B2145 Buick

B2145 Buick Code - Outside Rearview Mirror Position Sensor Input Voltage High

Quick Answer

The Memory Mirror Module (MMM) receives inputs from mirror position sensors during these functions: memory recall, memory seat and easy exit. Common causes include Faulty Outside Rearview Mirror Motor, Outside Rearview Mirror Motor harness is open or shorted, 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
B2145 Buick indicates Outside Rearview Mirror Position Sensor Input Voltage High.
Common causes
Common causes include Faulty Outside Rearview Mirror Motor, Outside Rearview Mirror Motor harness is open or shorted, 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 581
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 19, 2019
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Code B2145 Buick Description

The Memory Mirror Module (MMM) receives inputs from mirror position sensors during these functions: memory recall, memory seat and easy exit. Potentiometers in position sensors vary in resistance as motors move outside rearview mirror. MMM receives a variable voltage input depending on resistance of the potentiometer. During memory set, MMM records voltage across mirrors. During memory recall, MMM moves mirror motors until the voltage across each potentiometer matches recorded the voltage. During normal operation, mirror position sensors are checked against out-of-range limits. Outside rearview mirrors horizontal and vertical position sensor input voltage is 4.75 volts or more.
OBDII Code B2145 Buick - Outside Rearview Mirror Position Sensor Input Voltage High - AutoCodes.com
B2145 Buick Code - Outside Rearview Mirror Position Sensor Input Voltage High

What are the Possible Causes of the DTC B2145 Buick?

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

How to Fix the DTC B2145 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 B2145 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.

Need more information about the B2145 Buick 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 B2145 Buick Code

1. What are the common symptoms of OBDII code B2145 in a Buick related to the outside rearview mirror position sensor input voltage being high?

The common symptoms include erratic movement of the outside rearview mirror, mirror not responding to adjustments, and potential mirror malfunctions.

2. What are the possible causes of the outside rearview mirror position sensor input voltage high code (B2145) in a Buick?

Common causes can include a faulty mirror position sensor, wiring issues, a malfunctioning mirror control switch, or a problem with the mirror adjustment motor.

3. How can I diagnose the OBDII code B2145 in my Buick related to the outside rearview mirror position sensor input voltage being high?

You can start by checking the wiring and connections related to the mirror position sensor, testing the sensor itself, and verifying the mirror control switch functionality.

4. Can I still drive my Buick with the OBDII code B2145 indicating high input voltage for the outside rearview mirror position sensor?

While it may be safe to drive, it's recommended to address the issue promptly to ensure proper functioning of the outside rearview mirror for driving visibility and safety.

5. What are some repair tips for fixing the OBDII code B2145 in a Buick due to the outside rearview mirror position sensor input voltage being high?

Repair tips include inspecting and repairing any damaged wiring, replacing the faulty mirror position sensor, checking the mirror control switch, and testing the mirror adjustment motor.

6. Can resetting the OBDII system clear the B2145 trouble code in a Buick related to the outside rearview mirror sensor input voltage?

Resetting the OBDII system may temporarily clear the code, but if the underlying issue causing the high input voltage for the mirror sensor is not addressed, the code is likely to return.

7. Is it possible to fix the OBDII code B2145 related to the outside rearview mirror sensor input voltage high in a Buick without professional help?

Depending on your automotive repair skills, you may be able to address the issue yourself by following diagnostic procedures and replacing faulty components like the mirror position sensor.

8. Are there any safety concerns associated with driving a Buick with the OBDII code B2145 indicating high input voltage for the outside rearview mirror sensor?

Driving with this issue may compromise visibility and safety, especially if the outside rearview mirror becomes unresponsive or erratic. It's advisable to address the problem promptly.

9. Can extreme weather conditions or environmental factors contribute to triggering the OBDII code B2145 for high input voltage in a Buick mirror sensor?

Extreme weather conditions or exposure to moisture can potentially affect the mirror position sensor or its wiring, leading to high input voltage and triggering the B2145 trouble code.

10. How important is it to address the OBDII code B2145 for high input voltage in the outside rearview mirror sensor of a Buick promptly?

It is important to address this issue promptly to ensure the proper functioning of the outside rearview mirror for driving safety, convenience, and compliance with vehicle regulations.

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