B027B - Unresponsive Power Seat Control in 2015-2020 Ford F-150 and 2016-2020 Honda Accord

Quick Answer

B027B means: B027B indicates a problem with the power seat control system, often related to the seat adjustment not responding properly.

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

Can I drive with B027B? While it may not immediately affect vehicle safety, addressing it promptly is recommended to prevent further complications.

Common Questions

What does B027B mean and how does it affect my car?

The B027B code signifies an issue with the power seat system in your vehicle. If this code is triggered, you may find that your seat won't adjust properly, which can lead to uncomfortable driving positions. Over time, if not addressed, it could potentially affect other electronic systems in your car due to related wiring issues.

What are the most common causes of B027B and how much does it cost to fix?

Common causes include a faulty seat control module, damaged wiring, or a malfunctioning motor. Repair costs can range from $100 for wiring repairs up to $300 for a full module replacement, depending on labor and part prices.

Can I drive my car with B027B or should I stop immediately?

While driving with the B027B code isn't immediately dangerous, it’s advisable to have the issue checked out soon. An improperly adjusted seat can affect your driving position and visibility, which could be a safety concern.

How can I diagnose B027B myself using GeekOBD APP?

To diagnose B027B using the GeekOBD APP, start by connecting the app to your vehicle's OBD-II port. Retrieve the trouble codes and review the freeze frame data to understand the context of the fault. You can then check the seat adjustment switch and wiring for visible issues.

What vehicles are most commonly affected by B027B?

The B027B code is commonly found in vehicles like the 2015-2020 Ford F-150 and the 2016-2020 Honda Accord, among others. It's important to check for any recalls or Technical Service Bulletins (TSBs) related to this issue.

How can I prevent B027B from happening again?

To prevent the B027B code from recurring, regularly check the seat adjustment mechanism for any signs of wear or damage. Additionally, keep the seat area clean and free of moisture, and ensure that electrical connections are secure.

What is B027B?

The diagnostic trouble code (DTC) B027B is associated with issues in the power seat control system, particularly indicating that the driver's seat position is not responding to adjustments due to a malfunction in the control module or associated wiring. This code commonly appears in vehicles like the 2015-2020 Ford F-150 and the 2016-2020 Honda Accord. In simple terms, when you attempt to adjust your seat but it remains stuck in one position or moves erratically, it could trigger this code. The underlying problem can stem from a variety of issues including faulty seat motors, damaged wiring harnesses, or a malfunctioning body control module (BCM). Ignoring this code may not only lead to discomfort due to an improperly positioned seat but could also indicate potential electrical issues that may affect other systems in your vehicle. It's essential to address this promptly to ensure both safety and comfort while driving. A thorough diagnostic approach will involve checking the power seat switch, the wiring for damages, and the BCM for any faults that could be affecting the system.

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

Symptoms

Common symptoms when B027B is present:

  • The power seat fails to adjust in any direction when the control switch is activated, indicating a possible electrical fault.
  • The seat moves erratically or only partially responds to adjustments, leading to discomfort for the driver.
  • Check engine light or other warning lights may illuminate on the dashboard, signaling a need for diagnostic attention.
  • In some cases, associated features such as memory seat settings may also malfunction, affecting usability.
  • The seat may operate intermittently, working sometimes and failing at other times, which complicates the driving experience.

Possible Causes

Most common causes of B027B (ordered by frequency):

  1. The most common cause of the B027B code is a faulty power seat control module, which can fail due to wear and tear, with a likelihood of about 40%.
  2. Another frequent cause is damaged wiring or connectors in the seat adjustment circuit, often resulting from repeated movement or moisture exposure.
  3. A malfunctioning seat motor may also lead to this DTC, which can be prevented by regular maintenance checks on seat components.
  4. Less common causes include software issues within the BCM, which may require a software update to resolve.
  5. In rare cases, a complete failure of the BCM may be responsible, necessitating replacement as a last resort.

B027B Repair Costs

Cost Breakdown by Repair Type

Power Seat Control Module Replacement

Replacing the faulty power seat control module to restore proper function.

  • Total: $150 - $300
  • Success rate: 85%
Wiring Repair

Repairing or replacing damaged wiring to ensure proper current flow to the seat motor.

  • Total: $100 - $200
  • Success rate: 70%
Money-Saving Tips for B027B
  • 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 B027B Diagnosis Process

Follow these systematic steps to accurately diagnose B027B. 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, which typically takes 5-10 minutes

Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion, which typically takes 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, which can take 10-15 minutes

Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context, which can take 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 to test the power at the seat adjustment switch and the motor, usually requiring 20-30 minutes

Step 3: Component testing - Use a multimeter to test the power at the seat adjustment switch and the motor, usually requiring 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 - After repairs, verify proper operation of the seat adjustment system and clear codes, taking around 10-15 minutes

Step 4: System function test - After repairs, verify proper operation of the seat adjustment system and clear codes, taking around 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 that the power seat operates correctly, which may take 15-20 minutes

Step 5: Road test verification - Drive the vehicle under various conditions to confirm that the power seat operates correctly, which may take 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: Power Seat Control Module Replacement

Vehicle: 2018 Ford F-150, 45,000 miles

Problem: Customer reported the driver's seat would not adjust forward or backward.

Diagnosis: After scanning with the GeekOBD APP, the B027B code was confirmed. Visual inspection revealed a damaged power seat control module.

Solution: Replaced the power seat control module and reprogrammed it using specialized software.

Cost: $250 (parts: $150 for module, $100 for labor)

Result: The seat operated correctly after repairs, and the customer was satisfied with the prompt service.

Case Study 2: Wiring Repair on Honda Accord

Vehicle: 2017 Honda Accord, 30,000 miles

Problem: Driver's seat adjustment was intermittent, with the B027B code appearing.

Diagnosis: Inspection revealed frayed wiring in the seat adjustment circuit.

Solution: Repaired the wiring connections and applied electrical tape to prevent future damage.

Cost: $150 (parts: $20 for connectors, $130 for labor)

Result: The seat adjustments were restored to full functionality, and the customer reported no further issues.

Diagnose B027B

Use GeekOBD APP for professional diagnosis!

  • Real-time data monitoring
  • Advanced diagnostic features
  • Step-by-step repair guidance
  • Professional-grade analysis
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Code Information

Code: B027B
System: Body (Airbags, Lighting, Security, Climate Control)
Severity: MEDIUM
Category: Body Codes