AutoCodes – Cadillac – B2145 Cadillac

B2145 Cadillac 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 Cadillac 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.

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Code Popularity 516

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
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Code B2145 Cadillac 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 Cadillac - Outside Rearview Mirror Position Sensor Input Voltage High - AutoCodes.com — B2145 Cadillac Code - Outside Rearview Mirror Position Sensor Input Voltage High

What does this mean?

What are the Possible Causes of the DTC B2145 Cadillac?

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 Cadillac?

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 Cadillac 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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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 Cadillac Code

1. What are the common symptoms of OBDII code B2145 in a Cadillac related to the Outside Rearview Mirror Position Sensor Input Voltage High?

- Common symptoms include erratic movement of the outside rearview mirror, mirrors not adjusting properly, or mirror position not being retained.

2. What could cause the OBDII code B2145 in a Cadillac to trigger?

- The code B2145 can be triggered by a fault in the outside rearview mirror position sensor, damaged wiring or connectors, or a malfunction in the mirror control module.

3. How can I diagnose the issue causing OBDII code B2145 in my Cadillac?

- Diagnose the issue by inspecting the wiring and connectors related to the outside rearview mirror, testing the mirror position sensor for proper operation, and checking the mirror control module for faults.

4. Can I still drive my Cadillac with the OBDII code B2145 present?

- It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to ensure proper functionality of the outside rearview mirrors.

5. How can I repair OBDII code B2145 in my Cadillac?

- Repair the code B2145 by replacing a faulty outside rearview mirror position sensor, repairing damaged wiring or connectors, or replacing the mirror control module if necessary.

6. Are there any DIY tips for fixing the OBDII code B2145 in a Cadillac?

- DIY tips include checking for loose or damaged wiring, ensuring proper connection of the mirror position sensor, and following a repair manual for your specific Cadillac model.

7. Will resetting the OBDII code B2145 in my Cadillac make the issue go away permanently?

- Resetting the code may temporarily clear the warning light, but if the underlying issue causing the code is not addressed, it is likely to return.

8. How much does it typically cost to repair OBDII code B2145 in a Cadillac at a professional mechanic or dealership?

- The cost of repairing OBDII code B2145 can vary depending on the specific issue, but it may range from $100 to $500 or more, including parts and labor.

9. Can extreme weather conditions or external factors trigger the OBDII code B2145 in a Cadillac?

- Extreme weather conditions or external factors like water damage or physical impact to the outside rearview mirror can potentially trigger the code B2145.

10. Is it necessary to have the OBDII code B2145 in my Cadillac fixed immediately, or can it be delayed?

- While the vehicle may still be operable with this code present, it is recommended to address the issue promptly to ensure the proper functioning of the outside rearview mirrors and overall safety of the vehicle.