← View Generic B2086 Guide
Severity: Medium
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Vehicle-Specific Guide
This guide is customized for your 2021 Honda PASSPORT
B2086: B2086: Body Control Module (BCM) Security System Malfunction
on 2021 Honda PASSPORT
Fix Cost
$100 - $500
Parts & Labor
Difficulty
3/5
1-2 hours
DIY Possible?
❌ No
Pro recommended
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 B2086 Mean on 2021 Honda PASSPORT?
The Body Control Module (BCM) has detected a security system malfunction, which may be caused by a faulty sensor, wiring issue, or software problem.
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Symptoms
- • Alarm system activation
- • doors and trunk not locking/unlocking
- • security light on dashboard
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Common Causes
- • Faulty BCM sensor
- • wiring issue
- • software problem
- • faulty alarm system module
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How to Fix B2086 on 2021 Honda PASSPORT
1. Check BCM sensor connections and wiring for damage or corrosion. 2. Update BCM software if necessary. 3. Replace faulty BCM sensor or alarm system module 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 B2086
B2084
Sequential Code
B2084: Seat Position Sensor Circuit Malfunction
Medium
B2085
Sequential Code
B2085: Body System Code - Lighting Malfunction
Medium
B2087
Sequential Code
B2087: Audio System Fault
Medium
B2088
Sequential Code
B2088: Airbag System Fault
High
💡 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