← View Generic B1373 Guide
Severity: Medium
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Vehicle-Specific Guide
This guide is customized for your 2021 Honda PASSPORT
B1373: B1373: Illumination 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 B1373 Mean on 2021 Honda PASSPORT?
The B1373 code indicates a problem with the vehicle's lighting system, such as a faulty headlight, taillight, or brake light.
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Symptoms
- • Dim or non-functioning headlights
- • taillights
- • or brake lights
- • or a combination of these.
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Common Causes
- • Faulty headlight or taillight bulb
- • wiring issue
- • or a problem with the body control module.
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How to Fix B1373 on 2021 Honda PASSPORT
1. Check and replace the faulty bulb(s). 2. Inspect and repair any damaged wiring. 3. Update the body control module's 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 B1373
B1371
Sequential Code
B1371: Power Window Regulator Malfunction
Medium
B1372
Sequential Code
B1372: Seat Switch Circuit Malfunction
Medium
B1374
Sequential Code
B1374: Body System Security Malfunction
Medium
B1375
Sequential Code
B1375: Audio System Fault
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