← View Generic P0029 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

P0029: P0029: Fuel Trim Malfunction (Bank 1 Sensor 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 P0029 Mean on 2021 Honda PASSPORT?

The fuel trim system has detected a malfunction in the fuel delivery and air intake system, specifically on Bank 1 Sensor 1. This can cause the engine to run rich or lean, leading to decreased performance and potentially causing damage to the engine.
⚠️

Symptoms

  • • Poor engine performance
  • • rough idle
  • • decreased fuel efficiency
  • • engine stalling
  • • and decreased power
🔍

Common Causes

  • • Faulty fuel trim sensor
  • • clogged fuel filter
  • • faulty fuel injector
  • • vacuum leaks
  • • and faulty oxygen sensor
🛠️

How to Fix P0029 on 2021 Honda PASSPORT

1. Check and clean the fuel filter. 2. Check and replace the fuel injector. 3. Check and replace the oxygen sensor. 4. Check for vacuum leaks and repair as necessary. 5. Check the fuel trim sensor and replace if faulty.

🔧

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

Fuel filter Shop ↗ Fuel injector Shop ↗ Oxygen sensor Shop ↗ Fuel trim sensor Shop ↗

Essential Tool

Must Have

OBD2 Scanner

Read & clear codes on your 2021 Honda PASSPORT

Shop Scanners ↗
🔗

Related Diagnostic Codes

Other codes that may appear with P0029

P0027 Sequential Code

P0027: Fuel Injector Circuit Low Voltage (Bank 1, Cylinder 2)

Medium
P0028 Sequential Code

P0028: Fuel Injector Circuit Low Voltage Bank 1

Medium
P0030 Sequential Code

P0030: Fuel Heated Oxygen Sensor (H2S) Heater Circuit Malfunction

Medium
P0031 Sequential Code

P0031: Fuel Pressure Regulator Circuit Low Input

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