AutoCodes – Generic – B3962

B3962 Code - Seat Motors Over Current

Quick Answer

The seat adjuster motors are controlled by the Driver Seat Module (DSM) through the adjuster motor control circuits. Common causes include Faulty Adjuster Motor Assembly, Adjuster Motor Assembly harness is open or shorted, Adjuster Motor Assembly 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: B3962 indicates Seat Motors Over Current.
Common causes: Common causes include Faulty Adjuster Motor Assembly, Adjuster Motor Assembly harness is open or shorted, Adjuster Motor Assembly 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 496

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 Mar 25, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3962 Description

The seat adjuster motors are controlled by the Driver Seat Module (DSM) through the adjuster motor control circuits. In an inactive state both of the motor control circuits are grounded within the DSM. In an active state the DSM switches the appropriate motor control circuit to battery positive voltage. The direction of the adjuster motor rotation is determined by which of the motor control circuits is switched to battery positive voltage while the other remains grounded. During adjuster motor operation the DSM also monitors the current flow through the motor control circuits. The Diagnostic Trouble Code (DTC) sets when a motor control circuit current monitored by the DSM is determined to be shorted to ground.

OBDII Code B3962 - Seat Motors Over Current - AutoCodes.com — B3962 Code - Seat Motors Over Current

What does this mean?

What are the Possible Causes of the DTC B3962?

Faulty Adjuster Motor Assembly
Adjuster Motor Assembly harness is open or shorted
Adjuster Motor Assembly circuit poor electrical connection
Faulty Driver Seat Module (DSM)

How to Fix the DTC B3962?

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 B3962 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 B3962 code?

Need more information on how to fix the B3962 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B3962 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B3962 Buick — Seat Motors Over Current
B3962 Cadillac — Seat Motors Over Current
B3962 Chevrolet — Seat Motors Over Current
B3962 GMC — Seat Motors Over Current

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 B3962 Code

1. What are the common symptoms of OBDII code B3962 (Seat Motors Over Current)?

- Common symptoms include malfunctioning power seat controls, erratic seat movements, or complete failure of the power seat motors.

2. What causes OBDII code B3962 to trigger?

- This code is usually triggered when the power seat motors draw more current than the specified limit, indicating an overcurrent condition.

3. How can I diagnose the issue related to OBDII code B3962?

- Using a diagnostic scanner capable of reading OBDII codes, you can identify the specific fault code, which will point you towards the overcurrent issue in the seat motors.

4. Are there any common repair tips for fixing OBDII code B3962?

- Common repair steps involve checking the wiring harness for any short circuits or damaged wires, inspecting the seat motors for any obstructions, and ensuring proper grounding of the electrical components.

5. Can a DIY enthusiast fix OBDII code B3962 at home?

- While some basic troubleshooting steps can be undertaken by DIY enthusiasts, resolving an overcurrent issue in the seat motors may require specialized tools and expertise, so professional assistance is recommended.

6. Is it safe to continue driving with OBDII code B3962 present?

- It is not recommended to drive with this code active, as it may lead to further damage to the seat motors or electrical system, potentially compromising the safety and functionality of the power seats.

7. How much does it typically cost to repair OBDII code B3962?

- The cost of repairing this code can vary depending on the extent of the issue, but it may involve expenses for diagnostic tools, replacement parts, and labor, so it's advisable to get a quote from a professional technician.

8. Can resetting the OBDII code B3962 resolve the issue temporarily?

- Resetting the code may temporarily clear the fault from the system, but if the underlying issue causing the overcurrent condition is not addressed, the code is likely to reappear, indicating an ongoing problem.

9. Are there any preventive measures to avoid OBDII code B3962 in the future?

- Regular maintenance of the power seat components, checking for loose connections, and avoiding overloading the seat motors can help prevent the occurrence of overcurrent issues leading to this fault code.

10. How long does it take to repair OBDII code B3962?

- The repair time for this code can vary depending on the complexity of the issue and the availability of replacement parts, but it may take a few hours to a full day for a professional technician to diagnose and fix the problem.