← View Generic B0350 Guide
Severity: High
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Vehicle-Specific Guide
This guide is customized for your 2021 Honda PASSPORT
B0350: B0350: Body Control Module (BCM) Security Malfunction
on 2021 Honda PASSPORT
Fix Cost
$500 - $1500
Parts & Labor
Difficulty
4/5
2-4 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 B0350 Mean on 2021 Honda PASSPORT?
The Body Control Module (BCM) has detected a security malfunction, likely due to a faulty or tampered-with immobilizer system.
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Symptoms
- • Car won't start
- • alarm sounds constantly
- • or dashboard warning lights are illuminated.
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Common Causes
- • Faulty or tampered-with immobilizer system
- • corrupted BCM software
- • or a faulty BCM itself.
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How to Fix B0350 on 2021 Honda PASSPORT
1. Check the immobilizer system for any signs of tampering or damage. 2. Update the BCM software if necessary. 3. Replace the BCM if it's faulty.
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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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Essential Tool
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Related Diagnostic Codes
Other codes that may appear with B0350
B0348
Sequential Code
B0348: Seat Switch Circuit Malfunction
Medium
B0349
Sequential Code
B0349: Turn Signal Lamp Malfunction
Medium
B0351
Sequential Code
B0351: Audio System Malfunction
Medium
B0352
Sequential Code
B0352: Airbag 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