← View Generic B0004 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

B0004: Seat Position Sensor Malfunction

on 2021 Honda PASSPORT

Fix Cost
$150 - $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 B0004 Mean on 2021 Honda PASSPORT?

The B0004 code indicates a malfunction in the seat position sensor, which monitors the position and movement of the vehicle's seats. This can cause issues with seat adjustment, airbag deployment, and other safety features.
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Symptoms

  • • Seat adjustment issues
  • • airbag warning lights
  • • seatbelt warning lights
  • • unusual seat movement
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Common Causes

  • • Faulty seat position sensor
  • • wiring issues
  • • seat frame damage
  • • airbag module malfunction
🛠️

How to Fix B0004 on 2021 Honda PASSPORT

1. Disconnect the battery to prevent further damage. 2. Locate the faulty seat position sensor and replace it with a new one. 3. Check and repair any wiring issues. 4. Inspect the seat frame for damage and repair or replace as necessary. 5. Reconnect the battery and test the seat adjustment system.

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Need Maintenance Info for Your PASSPORT?

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Parts for 2021 Honda PASSPORT

Seat position sensor Shop ↗ Wiring harness Shop ↗ Seat frame repair kit Shop ↗

Essential Tool

Must Have

OBD2 Scanner

Read & clear codes on your 2021 Honda PASSPORT

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Related Diagnostic Codes

Other codes that may appear with B0004

B0002 Sequential Code

Body System Code B0002: Door Locks Malfunction

Medium
B0003 Sequential Code

Body System Code B0003: Windows

Medium
B0005 Sequential Code

Body System Code B0005: Lighting Malfunction

Medium
B0006 Sequential Code

B0006: Body System Security 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