← View Generic P0179 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

P0179: P0179: Fuel Trim Malfunction (Bank 1)

on 2021 Honda PASSPORT

Fix Cost
$100 - $500
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 P0179 Mean on 2021 Honda PASSPORT?

The engine computer has detected a fuel trim malfunction on bank 1, indicating a lean condition. This can be caused by a variety of factors, including a vacuum leak, faulty oxygen sensor, or clogged fuel filter.
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Symptoms

  • • Rough idle
  • • decreased power
  • • poor fuel economy
  • • and a check engine light
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Common Causes

  • • Vacuum leak
  • • faulty oxygen sensor
  • • clogged fuel filter
  • • dirty or fouled spark plugs
  • • faulty fuel injectors
  • • or a malfunctioning fuel pressure regulator
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How to Fix P0179 on 2021 Honda PASSPORT

1. Check for vacuum leaks and repair as necessary. 2. Replace the oxygen sensor if faulty. 3. Clean or replace the fuel filter. 4. Check and clean spark plugs. 5. Check fuel injectors for clogging or malfunction and clean or replace as necessary. 6. Check fuel pressure regulator and replace if faulty.

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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 Specs

Parts for 2021 Honda PASSPORT

oxygen sensor Shop ↗ fuel filter Shop ↗ spark plugs Shop ↗ fuel injectors Shop ↗ fuel pressure regulator Shop ↗

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Related Diagnostic Codes

Other codes that may appear with P0179

P0177 Sequential Code

P0177: Fuel Trim Malfunction (Bank 1)

Medium
P0178 Sequential Code

P0178: Fuel Trim Malfunction (Bank 1)

Medium
P0180 Sequential Code

P0180: Fuel Temperature Sensor Circuit Malfunction

Medium
P0181 Sequential Code

P0181: Fuel Temperature Sensor Circuit Malfunction

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