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Engine-Codes – Generic – B2145

B2145 Code - Outside Rearview Mirror Position Sensor Input Voltage High

Quick Answer

The diagnostic trouble code B2145 indicates that the outside rearview mirror position sensor input voltage is high. Common causes include Faulty outside rearview mirror position sensor, Wiring or connector issues in the mirror adjustment system, Corrosion or damage to the sensor or its components. 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 indicates Outside Rearview Mirror Position Sensor Input Voltage High.
Common causes
Common causes include Faulty outside rearview mirror position sensor, Wiring or connector issues in the mirror adjustment system, Corrosion or damage to the sensor or its components.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 08, 2024
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Code B2145 Description

The diagnostic trouble code B2145 indicates that the outside rearview mirror position sensor input voltage is high. This sensor is responsible for detecting the position of the external rearview mirror, allowing for adjustments to be made electronically. When the sensor detects a high voltage input, it can lead to incorrect mirror positioning or even a complete failure of the mirror adjustment system.

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

Common Causes of B2145

  1. Faulty outside rearview mirror position sensor
  2. Wiring or connector issues in the mirror adjustment system
  3. Corrosion or damage to the sensor or its components
  4. Electrical system malfunctions affecting the sensor
  5. Impact or damage to the external rearview mirror

Symptoms of B2145

  1. Inability to adjust the external rearview mirrors electronically
  2. Erratic or incorrect movements of the mirrors when attempting to adjust them
  3. Warning light on the dashboard related to the mirror adjustment system
  4. Unusual noises coming from the mirror adjustment mechanism
  5. Mirror position not holding or moving on its own

How to Fix B2145

  1. Begin by diagnosing the root cause of the high voltage input using a diagnostic scanner to retrieve the specific fault codes.
  2. Inspect the outside rearview mirror position sensor, wiring, and connectors for any visible damage or corrosion. Replace or repair any damaged components as needed.
  3. Test the sensor's voltage output using a multimeter to ensure it is within the correct range. Replace the sensor if it is found to be faulty.
  4. Clear the fault codes from the vehicle's computer system and perform a test drive to verify that the mirror adjustment system is functioning properly.
  5. If the issue persists, further electrical diagnostics may be required to identify any underlying problems with the vehicle's electrical system.

Cost to Fix B2145

The typical repair costs for addressing a high voltage input issue with the outside rearview mirror position sensor can range from $100 to $300, depending on the specific components that need to be replaced or repaired. This estimate includes both parts and labor. It is important to note that diagnosis time and labor rates at auto repair shops can vary significantly, so it is advisable to obtain quotes from multiple sources to ensure a fair price.

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Code B2145 Information for Specific Makes

  • B2145 Buick — Outside Rearview Mirror Position Sensor Input Voltage High
  • B2145 Cadillac — Outside Rearview Mirror Position Sensor Input Voltage High
  • B2145 Chevrolet — Outside Rearview Mirror Position Sensor Input Voltage High
  • B2145 GMC — Outside Rearview Mirror Position Sensor Input Voltage High
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 Code

1. What are the common symptoms of OBDII code B2145?

The common symptoms of OBDII code B2145, Outside Rearview Mirror Position Sensor Input Voltage High, include erratic movement or failure of the outside rearview mirrors.

2. What are the possible causes of OBDII code B2145?

Possible causes of code B2145 include a malfunctioning mirror position sensor, wiring issues, a faulty mirror control module, or a problem with the mirror adjustment switch.

3. How can I diagnose OBDII code B2145?

Diagnosing code B2145 involves using a scan tool to retrieve the code, checking the mirror position sensor and wiring for damage, testing the mirror control module, and verifying the mirror adjustment switch functionality.

4. How serious is OBDII code B2145?

While code B2145 may not affect the overall drivability of the vehicle, it can lead to inconvenience and safety concerns due to the inability to properly adjust the outside rearview mirrors.

5. Can I continue driving with OBDII code B2145?

It is not recommended to continue driving with code B2145, as it may compromise visibility and safety while on the road. It is best to address the issue promptly.

6. How can OBDII code B2145 be repaired?

Repairing code B2145 involves fixing or replacing the faulty mirror position sensor, repairing any damaged wiring, replacing the mirror control module if needed, or addressing any issues with the mirror adjustment switch.

7. Can I reset OBDII code B2145 without fixing the underlying issue?

Resetting the code without addressing the underlying issue will only temporarily clear the fault code. The issue will persist, and the code is likely to return until the problem is fixed.

8. Is OBDII code B2145 a common issue in vehicles?

Code B2145 is a relatively common issue in vehicles equipped with outside rearview mirror position sensors, especially in older vehicles or those with high mileage.

9. Are there any DIY repair tips for OBDII code B2145?

DIY enthusiasts can attempt to inspect the mirror position sensor and wiring for damage, clean or reseat connectors, or replace the mirror adjustment switch as potential DIY repair tips for code B2145.

10. How much does it cost to repair OBDII code B2145 at a professional mechanic?

The cost of repairing OBDII code B2145 at a professional mechanic can vary depending on the specific cause of the issue, parts needed, and labor costs. It is advisable to obtain quotes from different mechanics for comparison.

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