AutoCodes – Buick – B2587 Buick

B2587 Buick Code - Column Lock/Unlock Drive 'A'

Quick Answer

The Body Control Module (BCM) provides the steering column control function which allows the column to be electronically locked or unlocked. Common causes include Faulty Body Control Module (BCM), Body Control Module (BCM) harness is open or shorted, Body Control Module (BCM) 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: B2587 Buick indicates Column Lock/Unlock Drive 'A'.
Common causes: Common causes include Faulty Body Control Module (BCM), Body Control Module (BCM) harness is open or shorted, Body Control Module (BCM) 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 684

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Dec 29, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2587 Buick Description

The Body Control Module (BCM) provides the steering column control function which allows the column to be electronically locked or unlocked. The BCM provides three outputs, steering column lock, steering column unlock, and a steering column lock relay control. The BCM can apply a ground or battery output on the steering column lock or steering column unlock depending on the desired steering column lock motor position. The BCM uses the feedback switch in order to monitor the motor position and determine if the commanded position was accomplished. The Diagnostic Trouble Code (DTC) sets when the BCM detects an internal malfunction, an open or a short to ground, in the steering column lock circuit.

OBDII Code B2587 Buick - Column Lock/Unlock Drive 'A' - AutoCodes.com — B2587 Buick Code - Column Lock/Unlock Drive 'A'

What does this mean?

What are the Possible Causes of the DTC B2587 Buick?

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

How to Fix the DTC B2587 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 B2587 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.

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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 B2587 Buick Code

What does OBDII code B2587 mean for a Buick?

OBDII code B2587 indicates a problem with the column lock/unlock function in the vehicle's drive 'A' system, which is typically related to the steering column locking mechanism.

What are the common symptoms of a B2587 code?

Common symptoms include the steering wheel locking unexpectedly, inability to start the vehicle, or the steering column not unlocking when the ignition is turned on.

What can cause the B2587 code to trigger?

The code can be triggered by issues such as a faulty column lock actuator, wiring problems, a malfunctioning ignition switch, or issues within the Body Control Module (BCM).

How can I diagnose the B2587 code?

To diagnose the B2587 code, use an OBDII scanner to confirm the code, inspect the wiring and connectors related to the column lock system, and test the column lock actuator for proper operation.

What are some common repair tips for fixing the B2587 code?

Common repairs include replacing the column lock actuator, repairing any damaged wiring or connectors, and reprogramming or replacing the Body Control Module if necessary.

Is it safe to drive a vehicle with a B2587 code?

It may not be safe to drive if the steering column is locked or if the vehicle fails to start. It is best to address the issue promptly to avoid potential safety hazards.

Can I clear the B2587 code myself?

Yes, you can clear the B2587 code using an OBDII scanner; however, if the underlying issue is not resolved, the code will likely reappear.

Will a dead battery affect the B2587 code?

Yes, a dead or weak battery can affect the column lock/unlock system, potentially triggering the B2587 code. Ensure the battery is in good condition before diagnosing further.

What should I do if I cannot fix the B2587 code on my own?

If you are unable to resolve the B2587 code, it is advisable to take your vehicle to a certified mechanic or dealership for professional diagnosis and repair.