← View Generic B0428 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

B0428: B0428: Seat Position Sensor Circuit Malfunction

on 2021 Honda PASSPORT

Fix Cost
$100 - $300
Parts & Labor
Difficulty
3/5
1-2 hours
DIY Possible?
❌ No
Pro recommended
Your Vehicle
2021 Honda
PASSPORT
⚠️

Important for 2021 Honda PASSPORT Owners

Before starting repairs, verify which engine your 2021 Honda PASSPORT has. Check your VIN or engine code to ensure you order the correct parts.

📖 What Does B0428 Mean on 2021 Honda PASSPORT?

The seat position sensor circuit has malfunctioned, preventing the vehicle's computer from accurately detecting the position of the seat. This can cause issues with seat adjustment, airbag deployment, and other safety features.
⚠️

Symptoms

  • • Seat position sensor error message on the dashboard
  • • seat adjustment issues
  • • airbag light illuminated
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Common Causes

  • • Faulty seat position sensor
  • • wiring issues
  • • sensor connector corrosion
  • • seat motor malfunction
🛠️

How to Fix B0428 on 2021 Honda PASSPORT

1. Disconnect the battery to reset the system. 2. Check and clean the sensor connector. 3. Replace the seat position sensor if faulty. 4. Check and repair any wiring issues. 5. Test the seat motor to ensure proper function.

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Need Maintenance Info for Your PASSPORT?

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Parts for 2021 Honda PASSPORT

Seat position sensor Shop ↗ Sensor connector Shop ↗ Wiring harness Shop ↗

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Related Diagnostic Codes

Other codes that may appear with B0428

B0426 Sequential Code

B0426: Door Locks Actuator Circuit Malfunction

Medium
B0427 Sequential Code

B0427: Window Regulator Motor Circuit Malfunction

Medium
B0429 Sequential Code

B0429: Exterior Lighting Malfunction

Medium
B0430 Sequential Code

B0430: Body System Code - Security System Malfunction

Medium

💡 Why These Codes Are Related:

  • • Similar Issues: Same root cause or component failure
  • • Related Problems: Often occur together due to system interactions
  • • Sequential Codes: Progressive failure stages or multiple sensors
  • • Same System: Components within the same automotive system