AutoCodes – Lincoln – B1987 Lincoln

B1987 Lincoln Code - Pedal Forward / Rearward Motor Stalled

Quick Answer

he Driver Seat Module (DSM) uses a Hall-effect switch attached to the pedal motor to identify the current pedal position. Common causes include Faulty Adjustable Pedal Motor, Adjustable Pedal Motor harness is open or shorted, Adjustable Pedal Motor 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: B1987 Lincoln indicates Pedal Forward / Rearward Motor Stalled.
Common causes: Common causes include Faulty Adjustable Pedal Motor, Adjustable Pedal Motor harness is open or shorted, Adjustable Pedal Motor 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 739

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 Oct 29, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1987 Lincoln Description

he Driver Seat Module (DSM) uses a Hall-effect switch attached to the pedal motor to identify the current pedal position. The DSM sends a reference voltage through the Hall-effect switch and back to the DSM along the signal return circuit.
When 1 or more of the following Diagnostic Trouble Code (DTC) is set, the adjustable pedals will enter a jog mode. When the pedals are in jog mode, the memory system recall will not function from either the Remote Keyless Entry (RKE) transmitter or the memory SET switch buttons. When the pedals are actuated using the adjustable pedal switch, the motor will move the pedals for one second in the direction selected regardless of the length of time the button is actually pressed.
This DTC is only set during a DSM on-demand self test. During the self test, the adjustable pedal motor will be commanded to move forward and then rearward. If the motor encounters a hard stop while moving, the DSM will attempt to move the pedals in the opposite direction. If the DSM does not see any pedal movement via the Hall-effect switch during this attempt, DTC B1987 will be set and the adjustable pedal system will be disabled.

OBDII Code B1987 Lincoln - Pedal Forward / Rearward Motor Stalled - AutoCodes.com — B1987 Lincoln Code - Pedal Forward / Rearward Motor Stalled

What does this mean?

What are the Possible Causes of the DTC B1987 Lincoln?

Faulty Adjustable Pedal Motor
Adjustable Pedal Motor harness is open or shorted
Adjustable Pedal Motor circuit poor electrical connection

How to Fix the DTC B1987 Lincoln?

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 B1987 Lincoln 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 B1987 Lincoln Code

1. What are the common symptoms of OBDII code B1987 in a Lincoln related to the Pedal Forward / Rearward Motor Stalled issue?

- Common symptoms include unresponsive seat adjustment controls, inability to move the seat forward or backward, and a stalling motor sound when operating the seat adjustment.

2. What are the possible causes of OBDII code B1987 in a Lincoln triggering the Pedal Forward / Rearward Motor Stalled fault?

- Potential causes may include a faulty seat motor, wiring issues, a blown fuse, a malfunctioning seat control module, or mechanical obstructions hindering the seat movement.

3. How can I troubleshoot the Pedal Forward / Rearward Motor Stalled issue associated with OBDII code B1987 in my Lincoln?

- Start by checking the seat adjustment fuse, inspecting the wiring harness for any damage, ensuring the seat tracks are clear of obstructions, and testing the seat motor for proper functionality.

4. Is it safe to continue driving my Lincoln with the Pedal Forward / Rearward Motor Stalled problem indicated by OBDII code B1987?

- It is not recommended to drive the vehicle with this issue, as it can affect the driver's comfort and ability to adjust the seat position, potentially leading to safety hazards.

5. Can I repair the Pedal Forward / Rearward Motor Stalled issue associated with OBDII code B1987 in my Lincoln myself?

- Depending on your automotive repair skills and access to tools, you may be able to address simple causes such as blown fuses or loose connections. However, more complex issues may require professional diagnosis and repair.

6. What should I do if I encounter the Pedal Forward / Rearward Motor Stalled problem repeatedly despite clearing OBDII code B1987 in my Lincoln?

- If the issue persists after clearing the code, it is advisable to have the vehicle inspected by a qualified mechanic to identify any underlying problems causing the seat adjustment motor to stall.

7. Are there any preventive maintenance tips to avoid the Pedal Forward / Rearward Motor Stalled issue related to OBDII code B1987 in a Lincoln?

- Regularly inspecting the seat adjustment system, keeping the seat tracks clean and lubricated, and addressing any unusual noises or malfunctions promptly can help prevent the recurrence of this problem.

8. How much does it typically cost to repair the Pedal Forward / Rearward Motor Stalled issue linked to OBDII code B1987 in a Lincoln?

- The cost of repairs can vary depending on the specific cause of the problem. Simple fixes like replacing a fuse or repairing wiring may be relatively inexpensive, while replacing a faulty seat motor or control module can be more costly.

9. Can resetting the vehicle's computer system resolve the Pedal Forward / Rearward Motor Stalled issue associated with OBDII code B1987 in a Lincoln?

- Resetting the computer system may temporarily clear the error code, but if the underlying issue causing the motor to stall persists, the problem is likely to reoccur. It's best to address the root cause of the problem for a lasting solution.

10. Is it necessary to visit a dealership for repairs related to the Pedal Forward / Rearward Motor Stalled issue triggered by OBDII code B1987 in a Lincoln?

- While dealerships are equipped to handle Lincoln-specific issues, independent automotive repair shops with experience in electronic systems and seat adjustments may also be able to diagnose and repair the problem effectively.