← View Generic B0903 Guide Severity: Medium

🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

B0903: B0903: Audio System 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 B0903 Mean on 2021 Honda PASSPORT?

The B0903 code indicates a malfunction in the audio system, which may cause issues with sound quality, volume control, or overall system functionality.

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Symptoms

• No sound or distorted sound from the speakers
• inability to adjust volume
• or audio system not turning on.

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Common Causes

• Faulty audio amplifier
• damaged or corroded wiring
• blown speaker
• or a malfunctioning audio control module.

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How to Fix B0903 on 2021 Honda PASSPORT

1. Check and clean the audio wiring and connections. 2. Inspect and replace blown speakers. 3. Test and replace the audio amplifier. 4. Update the audio control module software or replace it if necessary.

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Need Maintenance Info for Your PASSPORT?

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Parts for 2021 Honda PASSPORT

Audio amplifier Shop ↗ Speaker Shop ↗ Audio wiring Shop ↗

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Must Have

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Related Diagnostic Codes

Other codes that may appear with B0903

B0901 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