← View Generic B0403 Guide
Severity: Medium
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Vehicle-Specific Guide
This guide is customized for your 2021 Honda PASSPORT
B0403: B0403: Power Window Circuit 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 B0403 Mean on 2021 Honda PASSPORT?
The B0403 code indicates a malfunction in the power window circuit, which can cause windows to malfunction or not function at all.
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Symptoms
- • Windows not moving
- • stuck or slow
- • intermittent window operation
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Common Causes
- • Faulty window regulator
- • damaged or corroded wiring
- • faulty window switch
- • blown fuse
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How to Fix B0403 on 2021 Honda PASSPORT
1. Check and replace blown fuse. 2. Inspect and clean corroded wiring. 3. Replace faulty window regulator. 4. Replace faulty window switch.
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Need Maintenance Info for Your PASSPORT?
Get oil capacity, filter specs, and torque settings for your specific 2021 Honda PASSPORT.
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Essential Tool
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Related Diagnostic Codes
Other codes that may appear with B0403
B0401
Sequential Code
B0401: Climate Control Temperature Sensor Malfunction
Medium
B0402
Sequential Code
B0402: Door Locks Malfunction
Medium
B0404
Sequential Code
B0404: Seat Switch Circuit Malfunction
Medium
B0405
Sequential Code
B0405: 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