AutoCodes – Generic – B2166

B2166 Code - Gear Select Position Fault

Quick Answer

The Body Control Module (BCM) monitors the Gear Select Position Sensor. Common causes include Faulty Gear Select Position Sensor, Gear Select Position Sensor harness is open or shorted, Gear Select Position Sensor 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: B2166 indicates Gear Select Position Fault.
Common causes: Common causes include Faulty Gear Select Position Sensor, Gear Select Position Sensor harness is open or shorted, Gear Select Position Sensor 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 6,230

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 22, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B2166 Description

The Body Control Module (BCM) monitors the Gear Select Position Sensor. The BCM sets the OBDII code when the Gear Select Position Sensor is not to factory specifications.

OBDII Code B2166 - Gear Select Position Fault - AutoCodes.com — B2166 Code - Gear Select Position Fault

What does this mean?

What are the Possible Causes of the DTC B2166?

Faulty Gear Select Position Sensor
Gear Select Position Sensor harness is open or shorted
Gear Select Position Sensor circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B2166?

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 B2166 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 B2166 code?

Need more information on how to fix the B2166 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2166 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 B2166 Code

1. What are the common symptoms of OBDII code B2166 (Gear Select Position Fault)?

The common symptoms of OBDII code B2166 include difficulty shifting gears, inaccurate gear display on the dashboard, and the vehicle not starting.

2. What are the possible causes of OBDII code B2166?

Possible causes of OBDII code B2166 include a faulty gear select position sensor, damaged wiring or connectors in the gear select system, or a malfunctioning transmission control module.

3. How can I diagnose OBDII code B2166?

Diagnosing OBDII code B2166 involves using a scan tool to retrieve the trouble code, inspecting the gear select position sensor and its wiring, and testing the transmission control module for proper operation.

4. Can OBDII code B2166 be repaired at home?

Repairing OBDII code B2166 may be possible at home if you have the necessary tools and expertise. However, it is recommended to seek professional help to accurately diagnose and fix the issue.

5. How much does it cost to repair OBDII code B2166?

The cost to repair OBDII code B2166 can vary depending on the underlying cause of the issue. Repairs may range from simple sensor replacements to more complex wiring repairs or module replacements, so costs can vary significantly.

6. Can driving with OBDII code B2166 cause further damage to my vehicle?

Continuing to drive with OBDII code B2166 may lead to further damage to your vehicle's transmission system. It is recommended to address the issue promptly to avoid potential costly repairs in the future.

7. Will resetting the OBDII code B2166 clear the issue?

Resetting the OBDII code B2166 may temporarily clear the issue, but if the underlying problem is not addressed, the code is likely to reappear. It is important to diagnose and fix the root cause of the problem.

8. How long does it take to repair OBDII code B2166?

The time required to repair OBDII code B2166 can vary depending on the cause of the issue and the availability of parts. Simple repairs may take a few hours, while more complex issues may require more time.

9. Is OBDII code B2166 a common problem in certain vehicle makes and models?

OBDII code B2166 can be a common problem in some vehicle makes and models, especially those with electronic gear select systems. It is always a good idea to check for any manufacturer recalls or technical service bulletins related to this code.

10. Can I prevent OBDII code B2166 from occurring in the future?

Regular maintenance of your vehicle's transmission system, including checking for any signs of wear or damage in the gear select system, can help prevent OBDII code B2166 from occurring in the future.