← View Generic U0681 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

U0681: Network Communication Code U0681 - Gateway

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
⚠️

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 U0681 Mean on 2021 Honda PASSPORT?

Network communication diagnostic trouble code related to gateway communication.
⚠️

Symptoms

  • • Communication errors
  • • module malfunctions
  • • system integration failures
  • • CAN bus issues.
🔍

Common Causes

  • • CAN bus faults
  • • module communication errors
  • • wiring problems
  • • connector corrosion.
🛠️

How to Fix U0681 on 2021 Honda PASSPORT

Check CAN bus integrity, test module communication, repair wiring, clean connectors.

🔧

Need Maintenance Info for Your PASSPORT?

Get oil capacity, filter specs, and torque settings for your specific 2021 Honda PASSPORT.

View 2021 Honda PASSPORT Specs

Parts for 2021 Honda PASSPORT

Various - depends on diagnosis Shop ↗

Essential Tool

Must Have

OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with U0681

U0679 Sequential Code

Network Communication Code U0679 - CAN Bus

Medium
U0680 Sequential Code

Network Communication Code U0680 - Module Communication

Medium
U0682 Sequential Code

Network Communication Code U0682 - Network Hub

Medium
U0683 Sequential Code

Network Communication Code U0683 - Data Link

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