← View Generic B1051 Guide Severity: Medium

🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

B1051: B1051: Power Window Relay Circuit Malfunction

on 2021 Honda PASSPORT

Fix Cost

$50 - $200

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 B1051 Mean on 2021 Honda PASSPORT?

The B1051 code indicates a problem with the power window relay circuit, which controls the operation of the windows. This can cause the windows to malfunction or not function at all.

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Symptoms

• Windows not moving
• intermittent window operation
• window stuck in position

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Common Causes

• Faulty power window relay
• wiring issue
• blown fuse
• faulty window switch

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How to Fix B1051 on 2021 Honda PASSPORT

Check the power window relay for any signs of physical damage or corrosion. Inspect the wiring harness for any signs of damage, chafing, or corrosion. Check the fuse box for a blown fuse and replace it if necessary. Test the window switch to ensure it's functioning properly.

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Parts for 2021 Honda PASSPORT

Power window relay Shop ↗ Wiring harness Shop ↗ Fuse Shop ↗

Essential Tool

Must Have

OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with B1051

B1049 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