← View Generic B0791 Guide Severity: Medium

🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

B0791: B0791: Audio System Malfunction

on 2021 Honda PASSPORT

Fix Cost

$100 - $500

Parts & Labor

Difficulty

3/5

1-2 hours

DIY Possible?

❌ No

Pro recommended

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 B0791 Mean on 2021 Honda PASSPORT?

The B0791 code indicates a malfunction in the audio system, possibly due to a faulty amplifier, speaker, or wiring issue.

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Symptoms

• No sound or distorted sound from the speakers
• inability to adjust volume or settings
• or intermittent audio system failures.

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Common Causes

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

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How to Fix B0791 on 2021 Honda PASSPORT

1. Check the audio system wiring for damage or corrosion and repair or replace as needed. 2. Test the amplifier and replace if faulty. 3. Inspect and replace blown speakers. 4. Update the audio control module software if necessary.

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Parts for 2021 Honda PASSPORT

Audio amplifier Shop ↗ Speaker Shop ↗ Wiring harness Shop ↗ Audio control module Shop ↗

Essential Tool

Must Have

OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with B0791

B0789 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