B1987 Mercury 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 Mercury 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.
Code B1987 Mercury Description
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.
What are the Possible Causes of the DTC B1987 Mercury?
- 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 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 B1987 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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Frequently Asked Questions about B1987 Mercury Code
1. What does the OBDII code B1987 mean for a Mercury vehicle?
B1987 indicates that the Pedal Forward/Rearward Motor is stalled, suggesting a malfunction in the motor responsible for adjusting the position of the accelerator or brake pedal.
2. What are the common symptoms of code B1987 on a Mercury?
Symptoms may include unresponsive pedal adjustment controls, a stuck pedal position, or an illuminated check engine light or warning message.
3. What causes the B1987 code to appear?
The most common causes are a faulty pedal adjustment motor, wiring issues such as damaged or corroded connections, or a malfunctioning control module.
4. Can I still drive my Mercury with a B1987 code?
Yes, you can still drive the vehicle, but you may not be able to adjust the pedal position, which could affect driving comfort or safety for different drivers.
5. How do I diagnose the B1987 code on my Mercury?
Start by inspecting the pedal adjustment motor, checking for damaged wiring or loose connections, and testing the motor's operation with a multimeter or scan tool.
6. What repairs can fix the B1987 code?
Repairs may include replacing the pedal adjustment motor, repairing or replacing damaged wiring, or reprogramming or replacing the control module if necessary.
7. How much does it cost to repair a B1987 code on a Mercury?
Costs vary depending on the issue, but replacing the pedal adjustment motor typically ranges from $200 to $500, including parts and labor.
8. Can I reset the B1987 code without fixing the issue?
You can clear the code with an OBDII scanner, but if the underlying problem isn't resolved, the code will likely return.
9. Is the B1987 code a common issue in Mercury vehicles?
It’s not a widespread issue, but it may occur in older models or vehicles with excessive wear on the pedal adjustment mechanism.
10. Can I fix the B1987 code myself?
If you're comfortable working with electrical components and have the necessary tools, you can attempt repairs like checking connections or replacing the motor. For complex issues, professional assistance is recommended.
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