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Engine-Codes – Generic – B1987

B1987 Code - Pedal Forward / Rearward Motor Stalled

Quick Answer

The B1987 diagnostic trouble code (DTC) indicates that the pedal forward/rearward motor in the vehicle has stalled. Common causes include Electrical wiring issues, such as a short circuit or open circuit in the pedal forward/rearward motor circuit, Mechanical failure of the motor itself, such as a worn-out motor or damaged internal components, Faulty seat control module that is not sending the correct signals to the motor. 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 indicates Pedal Forward / Rearward Motor Stalled.
Common causes
Common causes include Electrical wiring issues, such as a short circuit or open circuit in the pedal forward/rearward motor circuit, Mechanical failure of the motor itself, such as a worn-out motor or damaged internal components, Faulty seat control module that is not sending the correct signals to the motor.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code B1987 Description

The B1987 diagnostic trouble code (DTC) indicates that the pedal forward/rearward motor in the vehicle has stalled. This motor is responsible for adjusting the position of the driver's seat in a forward or rearward direction. When this motor stalls, it can prevent the seat from moving properly, impacting the driver's comfort and ability to reach the pedals and steering wheel effectively. This issue can also affect the vehicle's overall ergonomics and safety, as proper seat positioning is crucial for maintaining control and visibility while driving.

OBDII Code B1987 - Pedal Forward / Rearward Motor Stalled
B1987 Code - Pedal Forward / Rearward Motor Stalled

Common Causes of B1987

  1. Electrical wiring issues, such as a short circuit or open circuit in the pedal forward/rearward motor circuit.
  2. Mechanical failure of the motor itself, such as a worn-out motor or damaged internal components.
  3. Faulty seat control module that is not sending the correct signals to the motor.
  4. Loose or damaged connections between the control module and the motor.
  5. Excessive dirt or debris affecting the movement of the seat adjustment mechanism.

Symptoms of B1987

  1. Inability to adjust the driver's seat forward or backward.
  2. Unusual noises coming from the seat adjustment mechanism.
  3. Jerky or erratic movement of the driver's seat when attempting to adjust it.
  4. Seat position not holding in place after adjustment.
  5. Warning light on the instrument panel indicating a seat adjustment malfunction.

How to Fix B1987

  1. Perform a diagnostic scan to retrieve the specific fault codes and pinpoint the cause of the motor stall.
  2. Inspect the electrical wiring and connections associated with the pedal forward/rearward motor for any signs of damage or corrosion.
  3. Test the motor for proper functionality and replace if necessary.
  4. Check and reset the seat control module to ensure it is sending the correct signals to the motor.
  5. Clean and lubricate the seat adjustment mechanism to prevent future issues with movement.

Cost to Fix B1987

The cost of repairing a stalled pedal forward/rearward motor can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, you can expect to pay anywhere from $150 to $500 for parts and labor to address this issue. However, it's important to note that diagnostic time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's recommended to get a detailed estimate from a qualified mechanic or dealership to determine the exact cost for your vehicle.

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Code B1987 Information for Specific Makes

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 Code

1. What are the common symptoms of OBDII code B1987 (Pedal Forward / Rearward Motor Stalled)?

When this code is triggered, you may experience issues with the power seat adjustment functionality, such as the seat not moving forward or backward properly.

2. What are the possible causes of OBDII code B1987?

The code B1987 can be caused by a malfunction in the pedal forward/rearward motor circuit, a faulty motor, wiring issues, or a problem with the control module.

3. How can I diagnose the source of OBDII code B1987?

To diagnose the issue related to code B1987, you can start by checking the wiring connections, testing the motor functionality, and inspecting the control module for any signs of damage or malfunction.

4. Can a DIY enthusiast repair OBDII code B1987 at home?

If you have experience with automotive electrical systems and the necessary tools, you may be able to repair code B1987 at home by following the manufacturer's diagnostic and repair procedures.

5. Is it safe to drive with OBDII code B1987 present?

While it may be possible to drive with code B1987 present, it is not recommended as the power seat adjustment may not function correctly, potentially causing discomfort or safety hazards while driving.

6. How much does it typically cost to repair OBDII code B1987?

The cost of repairing OBDII code B1987 can vary depending on the specific cause of the issue, but it may involve replacing the motor, repairing wiring, or addressing control module problems, which can range from moderate to high in cost.

7. Can resetting the OBDII system clear code B1987?

Resetting the OBDII system may temporarily clear the code, but if the underlying issue causing code B1987 is not addressed, the code is likely to reappear once the problem is detected again.

8. Are there any preventative maintenance tips to avoid OBDII code B1987?

To prevent OBDII code B1987, you can regularly inspect the power seat adjustment system for any signs of wear, address any motor or wiring issues promptly, and follow the manufacturer's maintenance guidelines.

9. How long does it typically take to repair OBDII code B1987?

The repair time for OBDII code B1987 can vary depending on the complexity of the issue and the availability of parts, but it may take a few hours to a day for a professional technician to diagnose and repair the problem.

10. Can OBDII code B1987 affect other vehicle systems?

While OBDII code B1987 specifically relates to the pedal forward/rearward motor, it may not directly affect other vehicle systems. However, addressing the issue promptly is recommended to prevent any potential electrical or control module problems from impacting other systems.

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