← View Generic P0602 Guide
Severity: High
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Vehicle-Specific Guide
This guide is customized for your 2021 Honda PASSPORT
P0602: Control Module Programming Error
on 2021 Honda PASSPORT
Fix Cost
$200 - $1500
Parts & Labor
Difficulty
5/5
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 P0602 Mean on 2021 Honda PASSPORT?
The engine control module programming is corrupted or incorrect for the vehicle application.
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Symptoms
- • Check engine light
- • poor performance
- • no start
- • incorrect operation of engine systems
- • limp mode.
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Common Causes
- • Corrupted ECM programming
- • wrong software version
- • incomplete programming
- • power loss during programming.
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How to Fix P0602 on 2021 Honda PASSPORT
Reprogram engine control module with correct software, ensure stable power during programming, replace ECM if needed.
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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 P0602
P0600
Sequential Code
Serial Communication Link Malfunction
High
P0601
Sequential Code
Internal Control Module Memory Check Sum Error
High
P0603
Sequential Code
Internal Control Module Keep Alive Memory Error
Medium
P0604
Sequential Code
Internal Control Module Random Access Memory Error
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