AutoCodes – Generic – B2320

B2320 Code - Mirror Driver Horizontal Feedback Potentiometer Circuit Failure

Quick Answer

Under normal operation, the exterior mirror control switch receives power and ground from the circuit. Common causes include Faulty Driver Exterior Mirror, Driver Exterior Mirror harness is open or shorted, Driver Exterior Mirror 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: B2320 indicates Mirror Driver Horizontal Feedback Potentiometer Circuit Failure.
Common causes: Common causes include Faulty Driver Exterior Mirror, Driver Exterior Mirror harness is open or shorted, Driver Exterior Mirror 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 11,779

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 Nov 07, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2320 Description

Under normal operation, the exterior mirror control switch receives power and ground from the circuit. The exterior mirror control switch uses circuits to send input signals to the Driver Door Module (DDM). The DDM controls the Left (LH) exterior mirror motor movement by supplying the appropriate power and ground to circuits. The DDM communicates with the Driver Seat Module (DSM) through the Medium-Speed Controller Area Network (MS-CAN) whenever the DDM receives an input signal from the exterior mirror control switch for the Right (RH) mirror. The DSM controls the RH exterior mirror motor movement by supplying the appropriate power and ground.
The memory mirror system uses feedback potentiometers, located in the LH and RH exterior mirrors, in order to track the movement of the LH and RH exterior mirror motors. The DDM supplies the LH and RH exterior mirror feedback potentiometer reference voltage and ground through circuits. The DDM receives feedback from the LH and RH exterior mirror feedback potentiometer through left/right and up/down circuits.

OBDII Code B2320 - Mirror Driver Horizontal Feedback Potentiometer Circuit Failure - AutoCodes.com — B2320 Code - Mirror Driver Horizontal Feedback Potentiometer Circuit Failure

What does this mean?

What are the Possible Causes of the DTC B2320?

Faulty Driver Exterior Mirror
Driver Exterior Mirror harness is open or shorted
Driver Exterior Mirror circuit poor electrical connection
Faulty Driver Exterior Mirror Control Switch
Faulty Driver Door Module (DDM)
Faulty Driver Seat Module (DSM)

How to Fix the DTC B2320?

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 B2320 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 B2320 code?

Need more information on how to fix the B2320 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2320 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B2320 Chrysler — Front/Rear Washer Motor Control Circuit High
B2320 Dodge — Front/Rear Washer Motor Control Circuit High
B2320 Ford — Mirror Driver Horizontal Feedback Potentiometer Circuit Failure
B2320 Jeep — Front/Rear Washer Motor Control Circuit High
B2320 Lincoln — Mirror Driver Horizontal Feedback Potentiometer Circuit Failure
B2320 Mercury — Mirror Driver Horizontal Feedback Potentiometer Circuit Failure
B2320 RAM — Front/Rear Washer Motor Control Circuit 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 B2320 Code

1. What are the common symptoms of OBDII code B2320 (Mirror Driver Horizontal Feedback Potentiometer Circuit Failure)?

The common symptoms include erratic movement or failure of the driver side mirror, inability to adjust the mirror horizontally, and possibly an illuminated malfunction indicator light (MIL).

2. What are the possible causes of OBDII code B2320?

The code B2320 can be triggered by issues such as a faulty mirror horizontal feedback potentiometer, damaged wiring or connectors in the mirror circuit, or a malfunctioning mirror control switch.

3. How can I diagnose OBDII code B2320?

Diagnosing code B2320 typically involves inspecting the mirror horizontal feedback potentiometer, checking the wiring and connectors for damage, and using a scan tool to retrieve the trouble codes and data related to the mirror system.

4. Can I still drive my vehicle with OBDII code B2320?

While it may be possible to drive the vehicle with code B2320, it is not recommended, as the malfunctioning mirror can affect visibility and safety. It's best to address the issue promptly.

5. How can I repair OBDII code B2320?

Repairing code B2320 involves replacing the faulty mirror horizontal feedback potentiometer, repairing any damaged wiring or connectors, or addressing issues with the mirror control switch, depending on the root cause of the problem.

6. Is it safe to reset the OBDII code B2320 without fixing the underlying issue?

Resetting the code without fixing the underlying issue may temporarily turn off the MIL, but the problem will persist, leading to potential safety hazards and the code reappearing over time. It's crucial to address the root cause of the code.

7. Can extreme weather conditions cause OBDII code B2320 to appear?

Extreme weather conditions, such as exposure to moisture or extreme temperatures, can potentially damage the mirror components or wiring, leading to the triggering of code B2320.

8. Are there any preventive measures to avoid OBDII code B2320 in the future?

Regularly inspecting and maintaining the mirror system, keeping it clean and free of debris, and addressing any issues promptly can help prevent the occurrence of code B2320 in the future.

9. Can a DIY enthusiast fix OBDII code B2320, or is professional assistance recommended?

Depending on your skill level and experience with automotive repairs, you may be able to address code B2320 yourself by following repair guides and using the necessary tools. However, if you're unsure or uncomfortable, seeking professional assistance is recommended.

10. Will fixing OBDII code B2320 require resetting the vehicle's computer?

After fixing the underlying issue causing code B2320, you may need to clear the trouble codes using a scan tool to reset the vehicle's computer and turn off the MIL. This step ensures that the repair was successful and the code doesn't reoccur.