AutoCodesBuick – B3605 Buick

B3605 Buick Code - Adjustable Pedal Rearward Switch Circuit Protection Time-Out

Quick Answer

Ground is supplied at all times to the adjustable pedal switch. Common causes include Faulty Adjustable Pedal Forward Switch, Adjustable Pedal Forward Switch harness is open or shorted, Adjustable Pedal Forward 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
B3605 Buick indicates Adjustable Pedal Rearward Switch Circuit Protection Time-Out.
Common causes
Common causes include Faulty Adjustable Pedal Forward Switch, Adjustable Pedal Forward Switch harness is open or shorted, Adjustable Pedal Forward 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 568
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2023
💬 Need more help? Ask Coddy for instant answers — it's free!

Code B3605 Buick Description

Ground is supplied at all times to the adjustable pedal switch. The adjustable pedal forward and rearward switches are inputs to the seat memory control module. When the switch is operated to the forward or rearward direction, it supplies a ground path for the signal inputs from the seat memory control module. The seat memory control module then commands the adjustable pedals motor to move in response to the switch signal. The Diagnostic Trouble Code (DTC) will be set when the seat memory control module detects a short to ground in the rearward signal circuit for greater than 60 s.
OBDII Code B3605 Buick - Adjustable Pedal Rearward Switch Circuit Protection Time-Out - AutoCodes.com
B3605 Buick Code - Adjustable Pedal Rearward Switch Circuit Protection Time-Out

What are the Possible Causes of the DTC B3605 Buick?

  • Faulty Adjustable Pedal Forward Switch
  • Adjustable Pedal Forward Switch harness is open or shorted
  • Adjustable Pedal Forward Switch circuit poor electrical connection
  • Faulty Driver Seat Memory Control Module

How to Fix the DTC B3605 Buick?

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 B3605 Buick 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 B3605 Buick code?

Need more information on how to fix the B3605 Buick code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B3605 Buick 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 B3605 Buick Code

1. What does the OBDII code B3605 mean on a Buick?

The code B3605 indicates a fault in the Adjustable Pedal Rearward Switch Circuit, specifically related to a protection time-out issue.

2. What are the symptoms of code B3605 in a Buick?

Symptoms may include the adjustable pedals not moving rearward, the feature being inoperative, or a related warning light or message on the dashboard.

3. What causes code B3605 to appear?

Common causes include a faulty adjustable pedal switch, a problem with the wiring or connectors, or a malfunction in the pedal motor assembly.

4. Can I still drive my Buick with code B3605 active?

Yes, you can drive the vehicle, but the adjustable pedal feature may not work properly, which could affect comfort and safety for some drivers.

5. How do I diagnose the B3605 code on my Buick?

Begin by checking the pedal switch and wiring for damage or loose connections. Use a diagnostic scanner to confirm the code and analyze data from the Body Control Module (BCM).

6. What are common repairs for code B3605?

Repairs may include replacing the adjustable pedal switch, repairing or replacing damaged wiring, or addressing a fault in the BCM or motor assembly.

7. How much does it cost to fix code B3605 in a Buick?

Repair costs vary depending on the issue, but replacing the pedal switch typically costs $100–$300, including parts and labor.

8. Can a faulty fuse cause code B3605?

Yes, a blown fuse in the circuit can interrupt power to the adjustable pedal system and trigger the code.

9. Do I need to reprogram the BCM after fixing code B3605?

In most cases, reprogramming is not required, but clearing the code with a diagnostic scanner may be necessary after repairs.

10. How can I prevent code B3605 from reoccurring?

Regularly inspect the pedal switch, wiring, and connectors for wear or damage, and avoid overloading the adjustable pedal system.

Discuss the causes and fixes for B3605 Buick OBDII Code

Code B3605 Buick comments

No comments found for this page.

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