← View Generic P2278 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

P2278: Advanced Powertrain Code P2278

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 P2278 Mean on 2021 Honda PASSPORT?

Diagnostic trouble code for advanced powertrain system.
⚠️

Symptoms

  • • Check engine light
  • • system malfunction
  • • performance issues.
🔍

Common Causes

  • • Component failure
  • • wiring issues
  • • sensor malfunction
  • • mechanical wear.
🛠️

How to Fix P2278 on 2021 Honda PASSPORT

Diagnose specific system, replace faulty components, repair wiring, update software.

🔧

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 P2278

P2276 Sequential Code

Advanced Powertrain Code P2276

Medium
P2277 Sequential Code

Advanced Powertrain Code P2277

Medium
P2279 Sequential Code

Advanced Powertrain Code P2279

Medium
P2280 Sequential Code

Advanced Powertrain Code P2280

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