AutoCodes – Generic – B1684

B1684 Code - Mirror Driver/Passenger Switch Circuit Open

Quick Answer

The Body Control Module (BCM) monitors the Mirror Driver/Passenger Switch. Common causes include Faulty Mirror Driver/Passenger Switch, Mirror Driver/Passenger Switch harness is open or shorted, Mirror Driver/Passenger Switch 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
B1684 indicates Mirror Driver/Passenger Switch Circuit Open.
Common causes
Common causes include Faulty Mirror Driver/Passenger Switch, Mirror Driver/Passenger Switch harness is open or shorted, Mirror Driver/Passenger Switch 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 13,648
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 12, 2019
πŸ’¬ Need more help? Ask Coddy for instant answers β€” it's free!

Code B1684 Description

The Body Control Module (BCM) monitors the Mirror Driver/Passenger Switch. The BCM sets the OBDII code when the Mirror Driver/Passenger Switch is not to factory specifications.
OBDII Code B1684 - Mirror Driver/Passenger Switch Circuit Open - AutoCodes.com
B1684 Code - Mirror Driver/Passenger Switch Circuit Open

What are the Possible Causes of the DTC B1684?

  • Faulty Mirror Driver/Passenger Switch
  • Mirror Driver/Passenger Switch harness is open or shorted
  • Mirror Driver/Passenger Switch circuit poor electrical connection
  • Faulty Body Control Module (BCM)

How to Fix the DTC B1684?

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 B1684 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 B1684 code?

Need more information on how to fix the B1684 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1684 code diagnosed by a professional: Find a repair shop in your area

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 B1684 Code

1. What are the common symptoms of OBDII code B1684 Mirror Driver/Passenger Switch Circuit Open?

- Common symptoms include inoperative mirror adjustment controls, non-functional mirror adjustment motors, and illuminated mirror adjustment control lights on the dashboard.

2. What are the possible causes of OBDII code B1684 Mirror Driver/Passenger Switch Circuit Open?

- Potential causes can include damaged wiring or connectors in the mirror switch circuit, a faulty mirror adjustment switch, or a malfunctioning mirror adjustment motor.

3. How can I diagnose the cause of OBDII code B1684 Mirror Driver/Passenger Switch Circuit Open?

- Diagnosis typically involves inspecting the mirror adjustment switch, testing the mirror adjustment motor, and checking the wiring and connectors for any signs of damage or corrosion.

4. Can I still drive my vehicle with OBDII code B1684 Mirror Driver/Passenger Switch Circuit Open?

- While it may be possible to drive the vehicle with this code, it is not recommended as the mirror adjustment controls may be essential for safe driving and parking.

5. How can I repair OBDII code B1684 Mirror Driver/Passenger Switch Circuit Open?

- Repair methods may include replacing the mirror adjustment switch, repairing damaged wiring or connectors, or replacing the mirror adjustment motor as needed.

6. Is OBDII code B1684 Mirror Driver/Passenger Switch Circuit Open a serious issue?

- While not a critical safety concern, resolving this code is important for the proper functioning of the mirror adjustment controls, which can impact driving visibility and convenience.

7. Can resetting the OBDII system clear the B1684 code?

- Resetting the OBDII system may temporarily clear the code, but it will likely reappear if the underlying issue causing the Mirror Driver/Passenger Switch Circuit Open is not addressed.

8. Are there any common troubleshooting steps for fixing OBDII code B1684 Mirror Driver/Passenger Switch Circuit Open?

- Common troubleshooting steps may involve checking fuse integrity, testing the mirror adjustment switch functionality, and inspecting the mirror adjustment motor for proper operation.

9. How long does it typically take to repair OBDII code B1684 Mirror Driver/Passenger Switch Circuit Open?

- The repair time can vary depending on the specific cause of the code, but it may take anywhere from 30 minutes to a few hours to diagnose and fix the issue.

10. Can a DIY enthusiast repair OBDII code B1684 Mirror Driver/Passenger Switch Circuit Open?

- Depending on the individual's skill level and access to tools, a DIY enthusiast may be able to diagnose and repair this code by following repair guides and utilizing basic electrical troubleshooting techniques.

Discuss the causes and fixes for B1684 OBDII Code

AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play