← View Generic B3803 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

B3803: B3803: 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
⚠️

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 B3803 Mean on 2021 Honda PASSPORT?

The power window relay circuit has malfunctioned, preventing the windows from functioning properly. This code is typically set when the window regulator motor is not receiving power.
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Symptoms

  • • Windows do not move
  • • or move slowly
  • • when switch is activated
  • • or windows may be stuck in an open or closed position.
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Common Causes

  • • Faulty power window relay
  • • faulty window regulator motor
  • • wiring issues
  • • or blown fuse.
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How to Fix B3803 on 2021 Honda PASSPORT

1. Check the fuse box for a blown fuse and replace it if necessary. 2. Check the wiring harness for any damage or corrosion and repair as needed. 3. Test the window regulator motor to ensure it is functioning properly. 4. Replace the power window relay if faulty.

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Parts for 2021 Honda PASSPORT

Power window relay Shop ↗ Window regulator motor Shop ↗ Wiring harness Shop ↗

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Related Diagnostic Codes

Other codes that may appear with B3803

B3801 Sequential Code

B3801: Climate Control Fan Motor Malfunction

Medium
B3802 Sequential Code

B3802: Door Locks Actuator Malfunction

Medium
B3804 Sequential Code

B3804: Seat Position Sensor Circuit Malfunction

Medium
B3805 Sequential Code

B3805: Exterior Lighting Malfunction

Medium

💡 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