B0687 - Understanding the Code and Its Impact on Your Vehicle (Common in 2015-2019 Ford F-150)

Quick Answer

B0687 means: B0687 indicates a malfunction in the seat position sensor circuit.

Fix: Check and replace faulty components Cost: $150 - $300 Time: 90-180 minutes

Can I drive with B0687? Although it may not cause immediate danger, addressing it promptly is recommended to ensure comfort and safety.

Common Questions

What does B0687 mean and how does it affect my car?

The B0687 code indicates a malfunction in the seat position sensor circuit. This can affect your ability to adjust the seat properly, which not only reduces comfort but can also compromise safety by impacting airbag deployment. If left unaddressed, it may lead to further electrical issues in the vehicle.

What are the most common causes of B0687 and how much does it cost to fix?

The primary causes of the B0687 code include a faulty seat position sensor, damaged wiring, or a software glitch in the PCM. Repair costs can range from $100 for wiring repairs to $300 for sensor replacement, depending on the exact nature of the issue.

Can I drive my car with B0687 or should I stop immediately?

While B0687 does not usually pose an immediate danger, it is advisable to address the issue soon to ensure comfort and safety. Driving with this code may affect your seat's adjustability and airbag effectiveness.

How can I diagnose B0687 myself using GeekOBD APP?

To diagnose the B0687 code with GeekOBD APP, connect the app to your vehicle's OBD2 port, scan for codes, and review any freeze frame data. This will help you understand when the issue occurred and what conditions were present.

What vehicles are most commonly affected by B0687?

The B0687 code is commonly found in 2015-2019 Ford F-150 models, though it can also appear in several other vehicles from various manufacturers. Always check for recalls or technical service bulletins (TSBs) related to this code.

How can I prevent B0687 from happening again?

To prevent the B0687 code from recurring, regularly inspect the seat adjustment system, keep connections clean and secure, and avoid using non-OEM parts that may interfere with the sensor circuit.

What is B0687?

The diagnostic trouble code (DTC) B0687 refers to an issue with the vehicle's accessory protocol interface, specifically a problem with the 'Seat Position Sensor Circuit Range/Performance.' This code generally indicates that the power control module (PCM) has detected an out-of-range signal from the seat position sensor, which is critical for the proper functioning of the vehicle's seat adjustment system. For drivers of vehicles such as the Ford F-150 from 2015 to 2019, a B0687 code may lead to seat adjustment failures, which can affect comfort and safety. If the seat position sensor is not functioning correctly, it may prevent the seat from adjusting to the correct position. This could potentially lead to issues with airbag deployment if the seat position is not optimal in the event of a collision. In summary, ignoring the B0687 code can lead to significant safety concerns and discomfort while driving.

System: B - Body (Airbags, Lighting, Security, Climate Control)

Symptoms

Common symptoms when B0687 is present:

  • Check engine light illuminates or stays on constantly, indicating an underlying issue that needs attention.
  • Seat adjustment functions may be erratic or completely non-functional, making it difficult for drivers to find a comfortable driving position.
  • Inconsistent feedback from the seat position sensor can lead to incorrect airbag deployment, posing a safety risk in the event of a collision.
  • Potential electrical issues may manifest, such as unexpected resets of power seats or failure to return to preset positions.
  • Decreased convenience features related to seating, like memory seat options, may become unavailable or unreliable.

Possible Causes

Most common causes of B0687 (ordered by frequency):

  1. The most common cause is a faulty seat position sensor, which accounts for about 60% of B0687 cases. This component may wear out over time or experience electrical issues.
  2. Another potential cause could be damaged wiring or poor connections in the sensor circuit, which can cause intermittent signals and performance issues.
  3. Sometimes, the issue may stem from a software glitch in the vehicle’s PCM, which can misinterpret the sensor's readings.
  4. Less common but serious causes include internal failures in the PCM itself, which would require a professional technician to diagnose and replace.
  5. A rare but possible cause could be interference from aftermarket accessories that affect electrical systems, such as non-standard seat covers or electronic devices.

B0687 Repair Costs

Cost Breakdown by Repair Type

Sensor Replacement

Replacing the faulty seat position sensor with a new OEM part.

  • Total: $150 - $300
  • Success rate: 90%
Wiring Repair

Repairing damaged wiring and connectors in the seat position sensor circuit.

  • Total: $100 - $200
  • Success rate: 80%
PCM Reprogramming

Reprogramming the PCM to resolve software issues causing the code.

  • Total: $75 - $150
  • Success rate: 70%
Money-Saving Tips for B0687
  • Start with the most common and least expensive repairs first
  • Use GeekOBD APP to confirm diagnosis before replacing expensive parts
  • Consider preventive maintenance to avoid future occurrences
  • Compare prices for OEM vs aftermarket parts based on your needs
  • Address the issue promptly to prevent more expensive secondary damage

Diagnostic Steps

Professional B0687 Diagnosis Process

Follow these systematic steps to accurately diagnose B0687. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion (5-10 minutes)

Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion (5-10 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 2: Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes)

Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 3: Step 3: Component testing - Use a multimeter or specific diagnostic tools to test the seat position sensor and associated wiring (20-30 minutes)

Step 3: Component testing - Use a multimeter or specific diagnostic tools to test the seat position sensor and associated wiring (20-30 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 4: Step 4: System function test - Verify proper operation of the seat adjustment system after repairs and clear codes (10-15 minutes)

Step 4: System function test - Verify proper operation of the seat adjustment system after repairs and clear codes (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and ensure the seat operates correctly (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and ensure the seat operates correctly (15-20 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.

Important Notes

  • Always verify the repair with GeekOBD APP after completing diagnostic steps
  • Clear codes and test drive to ensure the problem is resolved
  • Address underlying causes to prevent code recurrence

Real Repair Case Studies

Case Study 1: Successful Repair of B0687 in a 2017 Ford F-150

Vehicle: 2017 Ford F-150, 50,000 miles

Problem: The customer reported that the driver's seat would not adjust, and the check engine light was on.

Diagnosis: After running a diagnostic scan with the GeekOBD APP, the B0687 code was confirmed. Visual inspection revealed damaged wiring leading to the seat position sensor.

Solution: The wiring was repaired, and the seat position sensor was replaced. The system was tested to ensure proper operation.

Cost: $225 (including parts and labor breakdown)

Result: The seat adjustment function was restored, and the check engine light was cleared.

Case Study 2: B0687 Resolution in a 2018 Ford Explorer

Vehicle: 2018 Ford Explorer, 30,000 miles

Problem: The customer experienced intermittent seat adjustment issues and received a B0687 code.

Diagnosis: Diagnostics with GeekOBD revealed a faulty seat position sensor, confirmed by multimeter testing.

Solution: The seat position sensor was replaced with an OEM part, and the system was recalibrated.

Cost: $280 (parts and labor included)

Result: The seat adjustment worked flawlessly post-repair, with no further issues reported.

Diagnose B0687

Use GeekOBD APP for professional diagnosis!

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  • Step-by-step repair guidance
  • Professional-grade analysis
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Code Information

Code: B0687
System: Body (Airbags, Lighting, Security, Climate Control)
Severity: MEDIUM
Category: Body Codes