AutoCodes – Mercury – B2589 Mercury

B2589 Mercury Code - No PSD Detent Switch Detected On Closing And Door Reversed

Quick Answer

The Power Sliding Door (PSD) latch has 2 positions that are monitored by the PSD module, a primary and a secondary. Common causes include Faulty Power Sliding Door (PSD) Detent Switch, Faulty Power Sliding Door (PSD) Adjustement, Faulty Power Sliding Door (PSD) Latch Actuator. 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: B2589 Mercury indicates No PSD Detent Switch Detected On Closing And Door Reversed.
Common causes: Common causes include Faulty Power Sliding Door (PSD) Detent Switch, Faulty Power Sliding Door (PSD) Adjustement, Faulty Power Sliding Door (PSD) Latch Actuator.
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 506

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 B2589 Mercury Description

The Power Sliding Door (PSD) latch has 2 positions that are monitored by the PSD module, a primary and a secondary. Just before the PSD detent switch reaches the secondary latch position (partially latched), a momentary ground signal is received by the PSD module on circuit. Just before the PSD detent switch reaches the primary latch position (fully latched), another momentary ground signal is received by the PSD module on circuit 1227 (WH). If the PSD module does not receive these ground signals when the door closes, DTC B2589 sets.

OBDII Code B2589 Mercury - No PSD Detent Switch Detected On Closing And Door Reversed - AutoCodes.com — B2589 Mercury Code - No PSD Detent Switch Detected On Closing And Door Reversed

What does this mean?

What are the Possible Causes of the DTC B2589 Mercury?

Faulty Power Sliding Door (PSD) Detent Switch
Faulty Power Sliding Door (PSD) Adjustement
Faulty Power Sliding Door (PSD) Latch Actuator
Faulty Power Sliding Door (PSD) Module

How to Fix the DTC B2589 Mercury?

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 B2589 Mercury 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 B2589 Mercury Code

1. What does the OBDII code B2589 mean on a Mercury vehicle?

The code B2589 indicates that the Power Sliding Door (PSD) system failed to detect the detent switch when the door was closing, causing the door to reverse its movement.

2. What are the symptoms of the B2589 code?

Common symptoms include the power sliding door reversing unexpectedly when closing, the door failing to latch properly, or the PSD system becoming inoperative.

3. What causes the B2589 code to appear?

This code can be caused by a faulty PSD detent switch, damaged wiring or connectors in the PSD system, or a malfunctioning PSD control module.

4. Can I still use the power sliding door if the B2589 code is present?

The door may still work manually, but the power sliding function could be unreliable or unsafe due to the reversing behavior.

5. How can I diagnose the B2589 code?

Start by inspecting the PSD detent switch, checking for loose or damaged wiring and connectors. Use a scan tool to monitor PSD system data and test components.

6. Is the PSD detent switch the only part that could cause the B2589 code?

No, other possible causes include issues with the PSD motor, track alignment, or the PSD control module.

7. How do I fix the B2589 code?

Repairs may involve replacing the PSD detent switch, repairing faulty wiring, aligning the door track, or reprogramming/replacing the control module.

8. How much does it cost to repair the B2589 code?

Repair costs vary depending on the issue, ranging from $50â€“$150 for a switch replacement to $500+ for module replacement or extensive wiring repair.

9. Can I clear the B2589 code without fixing the problem?

Clearing the code without addressing the issue may temporarily remove the warning, but the problem will likely persist and cause the code to reappear.

10. Is the B2589 code specific to Mercury vehicles?

While the code B2589 is commonly associated with Mercury vehicles, it can also appear on other Ford-related models with PSD systems.