← View Generic B0838 Guide
Severity: Medium
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Vehicle-Specific Guide
This guide is customized for your 2021 Honda PASSPORT
B0838: B0838: Body System Security Code
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 B0838 Mean on 2021 Honda PASSPORT?
This code indicates a malfunction in the vehicle's security system, which may prevent the vehicle from starting or cause other security-related issues.
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Symptoms
- • Vehicle won't start
- • security light on dashboard
- • alarm sounds randomly
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Common Causes
- • Faulty security module
- • bad battery connection
- • incorrect security code entry
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How to Fix B0838 on 2021 Honda PASSPORT
1. Check security module for faults and replace if necessary. 2. Inspect and clean battery connections. 3. Verify correct security code entry. 4. Update security module 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 B0838
B0836
Sequential Code
B0836: Seat Switch Circuit Malfunction
Medium
B0837
Sequential Code
B0837: Body Control Module (BCM) Lighting Circuit Malfunction
Medium
B0839
Sequential Code
B0839: Audio System Fault
Medium
B0840
Sequential Code
B0840: Airbag System Circuit Malfunction
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