AutoCodes – Generic – B1D27

B1D27 Code - Mirror Motor Common Control Circuit Low

Quick Answer

When the Memory Mirror Module senses a value below the tolerance of the mirror motor on the Mirror Motor Common Control circuit for over 10ms, this Diagnostic Trouble Code (DTC) will set. Common causes include Faulty Mirror Motor, Mirror Motor harness is open or shorted, 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: B1D27 indicates Mirror Motor Common Control Circuit Low.
Common causes: Common causes include Faulty Mirror Motor, Mirror Motor harness is open or shorted, 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 2,762

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 Aug 27, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1D27 Description

When the Memory Mirror Module senses a value below the tolerance of the mirror motor on the Mirror Motor Common Control circuit for over 10ms, this Diagnostic Trouble Code (DTC) will set.

OBDII Code B1D27 - Mirror Motor Common Control Circuit Low - AutoCodes.com — B1D27 Code - Mirror Motor Common Control Circuit Low

What does this mean?

What are the Possible Causes of the DTC B1D27?

Faulty Mirror Motor
Mirror Motor harness is open or shorted
Mirror Motor circuit poor electrical connection
Faulty Memory Mirror Module

How to Fix the DTC B1D27?

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 B1D27 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 B1D27 code?

Need more information on how to fix the B1D27 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1D27 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1D27 Chrysler — Mirror Motor Common Control Circuit Low
B1D27 Dodge — Mirror Motor Common Control Circuit Low
B1D27 Jeep — Mirror Motor Common Control Circuit Low
B1D27 RAM — Mirror Motor Common Control Circuit Low

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 B1D27 Code

1. What are the common symptoms of OBDII code B1D27 (Mirror Motor Common Control Circuit Low)?

- Common symptoms include malfunctioning power mirrors, erratic mirror movement, and a non-responsive mirror control switch.

2. What are the possible causes of OBDII code B1D27?

- The code B1D27 may be triggered by issues such as a faulty mirror motor, damaged wiring or connectors in the mirror control circuit, or a malfunctioning mirror control switch.

3. How can I diagnose the Mirror Motor Common Control Circuit Low issue?

- Diagnosis involves checking the mirror motor and related components for physical damage, testing the mirror control circuit for continuity and proper voltage, and using a scan tool to retrieve the specific diagnostic trouble code (DTC).

4. Can I still drive my vehicle with the B1D27 fault code?

- While driving with the B1D27 code may not directly affect the drivability of your vehicle, it is recommended to address the issue promptly to ensure proper functionality of the power mirrors.

5. What are some repair tips for fixing the Mirror Motor Common Control Circuit Low problem?

- Repair tips include inspecting and repairing any damaged wiring or connectors, replacing the mirror motor if necessary, and ensuring all connections are secure and free of corrosion.

6. Is it possible to reset the B1D27 fault code without fixing the underlying issue?

- Resetting the fault code without addressing the underlying problem may temporarily clear the code, but the issue will likely resurface until the root cause is resolved.

7. Can extreme weather conditions contribute to triggering the B1D27 code?

- Yes, extreme temperatures or moisture can potentially cause electrical issues in the mirror control circuit, leading to the activation of the B1D27 fault code.

8. Are there any preventive measures to avoid encountering the Mirror Motor Common Control Circuit Low fault code?

- Regularly inspecting the condition of the mirror control system, keeping connectors clean and protected, and addressing any mirror motor issues promptly can help prevent the B1D27 code from occurring.

9. What is the typical cost to repair the Mirror Motor Common Control Circuit Low problem?

- The cost of repairing the B1D27 fault code can vary depending on the specific cause of the issue, but it may involve expenses for replacement parts and potential labor charges for diagnosis and repair.

10. Can a DIY enthusiast fix the Mirror Motor Common Control Circuit Low issue at home?

- Depending on the DIY skills and tools available, some enthusiasts may be able to address the B1D27 fault code themselves by following repair guides, but professional assistance is recommended for complex electrical issues.