← View Generic B0422 Guide
Severity: Medium
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Vehicle-Specific Guide
This guide is customized for your 2021 Honda PASSPORT
B0422: B0422: 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 B0422 Mean on 2021 Honda PASSPORT?
The Body Control Module (BCM) has detected a malfunction in the security system, which may cause the vehicle to be in a locked state or prevent the engine from starting.
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Symptoms
- • Car won't start
- • doors won't unlock
- • alarm sounds continuously
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Common Causes
- • Faulty BCM
- • bad or loose wiring
- • security system sensor malfunction
- • battery drain
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How to Fix B0422 on 2021 Honda PASSPORT
1. Check and reset the BCM, 2. Inspect and repair or replace wiring, 3. Replace faulty security system sensor, 4. Check and repair any battery drain issues
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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 B0422
B0420
Sequential Code
B0420: Seat Switch Circuit Malfunction
Medium
B0421
Sequential Code
B0421: Body Control Module (BCM) Malfunction - Exterior Lighting
Medium
B0423
Sequential Code
B0423: Audio System Malfunction
Medium
B0424
Sequential Code
B0424: 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