← View Generic B0685 Guide
Severity: Medium
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Vehicle-Specific Guide
This guide is customized for your 2021 Honda PASSPORT
B0685: B0685: Body System Code for Malfunctioning Exterior Lighting
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 B0685 Mean on 2021 Honda PASSPORT?
This code indicates a problem with the exterior lighting system, such as faulty headlight, taillight, or brake light operation.
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Symptoms
- • Dim or non-functioning exterior lights
- • warning lights on dashboard
- • difficulty seeing at night
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Common Causes
- • Faulty headlight or taillight bulb
- • wiring issue
- • blown fuse
- • or malfunctioning lighting control module
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How to Fix B0685 on 2021 Honda PASSPORT
1. Check and replace faulty bulbs; 2. Inspect wiring and connections; 3. Check fuse box for blown fuses; 4. Test lighting control module
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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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Related Diagnostic Codes
Other codes that may appear with B0685
B0683
Sequential Code
B0683: Window Regulator Malfunction
Medium
B0684
Sequential Code
B0684: Seat Switch Circuit Malfunction
Medium
B0686
Sequential Code
B0686: Body System Code - Security System Malfunction
Medium
B0687
Sequential Code
B0687: 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