← View Generic U3122 Guide
Severity: Medium
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Vehicle-Specific Guide
This guide is customized for your 2021 Honda PASSPORT
U3122: Network Communication Code U3122 - CAN Bus
on 2021 Honda PASSPORT
Fix Cost
$50 - $300
Parts & Labor
Difficulty
3/5
1-2 hours
DIY Possible?
✅ Yes
Save money
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 U3122 Mean on 2021 Honda PASSPORT?
Network communication diagnostic trouble code related to can bus communication.
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Symptoms
- • Communication errors
- • module malfunctions
- • system integration failures
- • CAN bus issues.
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Common Causes
- • CAN bus faults
- • module communication errors
- • wiring problems
- • connector corrosion.
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How to Fix U3122 on 2021 Honda PASSPORT
Check CAN bus integrity, test module communication, repair wiring, clean connectors.
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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 U3122
U3120
Sequential Code
Network Communication Code U3120 - Protocol Error
Medium
U3121
Sequential Code
Network Communication Code U3121 - Bus Fault
Medium
U3123
Sequential Code
Network Communication Code U3123 - Module Communication
Medium
U3124
Sequential Code
Network Communication Code U3124 - Gateway
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