AutoCodes – Generic – B3631

B3631 Code - Adjustable Foot Pedal Inhibit Circuit

Quick Answer

Voltage to the adjustable pedal switch is supplied through the park enable relay while in a de-energized state. Common causes include Faulty Instrument Panel Fuse Block, Instrument Panel Fuse Block harness is open or shorted, Instrument Panel Fuse Block 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: B3631 indicates Adjustable Foot Pedal Inhibit Circuit.
Common causes: Common causes include Faulty Instrument Panel Fuse Block, Instrument Panel Fuse Block harness is open or shorted, Instrument Panel Fuse Block 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 1,195

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 Jun 14, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3631 Description

Voltage to the adjustable pedal switch is supplied through the park enable relay while in a de-energized state. The transmission park relay is controlled by the Body Control Module (BCM) through a low side drive control circuit and will be energized whenever the ignition is in the accessory, run, or crank positions and the transmission is in the P (Park) position. The Diagnostic Trouble Code (DTC) sets when the BCM detects a short to ground on the transmission park relay control circuit while attempting to activate the output.

OBDII Code B3631 - Adjustable Foot Pedal Inhibit Circuit - AutoCodes.com — B3631 Code - Adjustable Foot Pedal Inhibit Circuit

What does this mean?

What are the Possible Causes of the DTC B3631?

Faulty Instrument Panel Fuse Block
Instrument Panel Fuse Block harness is open or shorted
Instrument Panel Fuse Block circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B3631?

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 B3631 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 B3631 code?

Need more information on how to fix the B3631 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B3631 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B3631 Buick — Adjustable Foot Pedal Inhibit Circuit
B3631 Cadillac — Adjustable Foot Pedal Inhibit Circuit
B3631 Chevrolet — Adjustable Foot Pedal Inhibit Circuit
B3631 GMC — Adjustable Foot Pedal Inhibit Circuit

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 B3631 Code

1. What are the common symptoms of OBDII code B3631 (Adjustable Foot Pedal Inhibit Circuit)?

- Common symptoms include the inability to adjust the foot pedal position, the foot pedal getting stuck in one position, or a warning light on the dashboard.

2. What can cause OBDII code B3631 to trigger?

- The code can be triggered by a faulty adjustable foot pedal position sensor, a malfunction in the pedal adjustment motor, or issues with the wiring or connectors in the adjustable foot pedal circuit.

3. How can I diagnose the cause of OBDII code B3631 myself?

- You can start by checking the adjustable foot pedal sensor and motor for any visible damage or loose connections. Using an OBDII scanner to retrieve the trouble codes can also help pinpoint the issue.

4. What is the typical repair for OBDII code B3631?

- The repair for this code often involves replacing the faulty adjustable foot pedal sensor or motor, repairing any damaged wiring or connectors, and clearing the trouble codes from the vehicle's system.

5. Can I continue driving my vehicle with OBDII code B3631 present?

- While the vehicle may still be driveable with this code present, it is recommended to address the issue promptly to ensure the proper functioning of the adjustable foot pedal system.

6. How much does it typically cost to repair OBDII code B3631?

- The cost of repair can vary depending on the extent of the issue and the specific components that need to be replaced. It is advisable to consult with a mechanic for an accurate estimate.

7. Are there any preventive maintenance tips to avoid OBDII code B3631 in the future?

- Regularly inspecting the adjustable foot pedal system for any signs of wear or damage, keeping the area clean and free of debris, and addressing any issues promptly can help prevent this code from occurring.

8. Can OBDII code B3631 be a safety concern?

- Yes, if left unaddressed, this code can pose a safety risk as it may affect the proper operation of the foot pedal, potentially leading to difficulty controlling the vehicle.

9. Is it possible to reset OBDII code B3631 without making any repairs?

- Resetting the code without addressing the underlying issue may temporarily clear the warning light, but the problem is likely to reoccur. It is best to diagnose and repair the issue to prevent future issues.

10. Can a DIY enthusiast with basic mechanical skills repair OBDII code B3631?

- Depending on the specific cause of the code, some DIY enthusiasts with basic mechanical skills may be able to replace the adjustable foot pedal sensor or motor themselves. However, it is always recommended to consult a professional if unsure.