← View Generic B2102 Guide
Severity: High
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Vehicle-Specific Guide
This guide is customized for your 2021 Honda PASSPORT
B2102: B2102: Body Control Module (BCM) Security System Malfunction
on 2021 Honda PASSPORT
Fix Cost
$200 - $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 B2102 Mean on 2021 Honda PASSPORT?
The Body Control Module (BCM) has detected a security system malfunction, which can prevent the vehicle from starting or running.
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Symptoms
- • Car won't start
- • security light on dashboard
- • alarm sounds randomly
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Common Causes
- • Faulty BCM
- • faulty security sensor
- • wiring issue
- • battery drain
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How to Fix B2102 on 2021 Honda PASSPORT
1. Check and reset the BCM, 2. Check and replace faulty security sensor, 3. Inspect and repair wiring issue, 4. Check and replace battery
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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 B2102
B2100
Sequential Code
B2100: Seat Position Sensor Circuit Malfunction
Medium
B2101
Sequential Code
B2101: Body System Code - Lighting Malfunction
Medium
B2103
Sequential Code
B2103: Audio System Fault
Medium
B2104
Sequential Code
B2104: Airbag System Failure
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