AutoCodes – Cadillac – B2593 Cadillac

B2593 Cadillac Code - Column Lock/Unlock Drive 'B'

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: B2593 Cadillac indicates Column Lock/Unlock Drive 'B'.
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 591

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 Jan 01, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2593 Cadillac 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 B2593 Cadillac - Column Lock/Unlock Drive 'B' - AutoCodes.com — B2593 Cadillac Code - Column Lock/Unlock Drive 'B'

What does this mean?

What are the Possible Causes of the DTC B2593 Cadillac?

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 B2593 Cadillac?

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 B2593 Cadillac 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 B2593 Cadillac Code

What does the OBDII code B2593 mean on a Cadillac?

1. The B2593 code indicates an issue with the Column Lock/Unlock Drive 'B,' which is responsible for locking or unlocking the steering column as part of the vehicle's security system. 2.

What are common symptoms of the B2593 code?

Symptoms may include the steering column failing to lock or unlock, warning lights on the dashboard, or an inability to start the vehicle. 3.

What causes the B2593 code on a Cadillac?

Common causes include a faulty steering column lock actuator, wiring issues, a malfunctioning control module, or mechanical obstructions in the steering column. 4.

Can the B2593 code affect vehicle safety?

Yes, a malfunctioning steering column lock system can compromise security and, in some cases, prevent safe operation of the vehicle. 5.

How is the B2593 code diagnosed?

A technician will use a diagnostic scanner to confirm the code, inspect the wiring and connectors, and test the functionality of the steering column lock actuator and related components. 6.

Can a dead battery trigger the B2593 code?

Yes, a low or dead battery can sometimes cause communication or power issues that may trigger this code. 7.

How do you fix the B2593 code?

Repairs may involve replacing the steering column lock actuator, repairing damaged wiring, or reprogramming the control module if necessary. 8.

Is it safe to drive with the B2593 code active?

It is not recommended, as the steering column lock may not function properly, potentially causing security or operational issues. 9.

How much does it cost to fix the B2593 code on a Cadillac?

Repair costs can vary but generally range from $200 to $800, depending on whether parts like the actuator or control module need replacement. 10.

Can the B2593 code clear itself?

No, the code typically requires proper diagnosis and repair. However, clearing the code with a scanner may temporarily reset it, though the issue will likely return if not fixed.