← View Generic B0804 Guide Severity: Medium

🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

B0804: B0804: Seat Switch Circuit Malfunction

on 2021 Honda PASSPORT

Fix Cost

$100 - $500

Parts & Labor

Difficulty

3/5

1-2 hours

DIY Possible?

✅ Yes

Save money

Your Vehicle

2021 Honda

PASSPORT

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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 B0804 Mean on 2021 Honda PASSPORT?

The B0804 code indicates a malfunction in the seat switch circuit, which controls the seat's position, lumbar support, or recline function.

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Symptoms

• Seat position or function not working correctly
• lumbar support or recline not adjusting
• or seat warning light illuminated.

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Common Causes

• Faulty seat switch
• wiring issue
• or seat control module failure.

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How to Fix B0804 on 2021 Honda PASSPORT

1. Disconnect the battery to reset the system. 2. Check and clean the seat switch contacts. 3. Replace the seat switch if faulty. 4. Inspect and repair any damaged wiring. 5. Replace the seat control module if faulty.

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Need Maintenance Info for Your PASSPORT?

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Parts for 2021 Honda PASSPORT

Seat switch Shop ↗ Wiring harness Shop ↗ Seat control module Shop ↗

Essential Tool

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OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with B0804

B0802 Sequential Code

💡 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