← View Generic B1235 Guide Severity: Medium

🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

B1235: B1235: 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 B1235 Mean on 2021 Honda PASSPORT?

The power window relay circuit has malfunctioned, preventing the windows from functioning properly. This code is often accompanied by a warning light on the dashboard.

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Symptoms

• Windows do not move
• or move erratically
• when switches are activated

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Common Causes

• Faulty power window relay
• wiring issues
• or a blown fuse

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How to Fix B1235 on 2021 Honda PASSPORT

1. Check the fuse box for a blown fuse and replace it if necessary. 2. Inspect the wiring harness for damage or corrosion and repair or replace as needed. 3. Test the power window relay and replace it if faulty.

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Need Maintenance Info for Your PASSPORT?

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Parts for 2021 Honda PASSPORT

Power window relay Shop ↗ Wiring harness Shop ↗ Fuse 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 B1235

B1233 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