← View Generic B3725 Guide
Severity: Medium
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Vehicle-Specific Guide
This guide is customized for your 2021 Honda PASSPORT
B3725: B3725: Exterior Lighting Malfunction
on 2021 Honda PASSPORT
Fix Cost
$50 - $200
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 B3725 Mean on 2021 Honda PASSPORT?
The B3725 code indicates a problem with the exterior lighting system, such as a faulty headlight, taillight, or brake light.
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Symptoms
- • Dim or inoperative exterior lights
- • warning lights on dashboard
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Common Causes
- • Faulty headlight or taillight bulb
- • wiring issue
- • or body control module malfunction
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How to Fix B3725 on 2021 Honda PASSPORT
1. Check and replace faulty bulb(s). 2. Inspect and repair wiring damage. 3. Update body control module software if necessary.
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Need Maintenance Info for Your PASSPORT?
Get oil capacity, filter specs, and torque settings for your specific 2021 Honda PASSPORT.
View 2021 Honda PASSPORT SpecsParts for 2021 Honda PASSPORT
Essential Tool
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Related Diagnostic Codes
Other codes that may appear with B3725
B3723
Sequential Code
B3723: Power Window Regulator Malfunction
Medium
B3724
Sequential Code
B3724: Seat Position Sensor Circuit Malfunction
Medium
B3726
Sequential Code
B3726: Immobilizer System Malfunction
High
B3727
Sequential Code
B3727: Audio System 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