2004 Hyundai Tucson (JN) — Repair Solution

2.7L G6BA 6cyl 24v DOHC MPFI Petrol · Loss Of Power · Engine

Hyundai Tucson (JN) Loss Of Power Engine Diagnostic Sequence Available

Vehicle Details

Make: Hyundai
Model: Tucson (JN)
Year: 2004
Engine: 2.7L G6BA 6cyl 24v DOHC MPFI Petrol
Area: Engine
Category: Loss Of Power

Customer Complaint

Poor engine performance, including hesitation and misfire under load.

Vehicle had been stationary for some weeks prior to this.

Problem Summary

Confirmed very poor performance, but engine idle was ok.

During road test hesitation and misfire was very evident under acceleration.

Cause was eventually traced to a faulty mass airflow sensor

Diagnostic Sequence

The step-by-step diagnostic process used to identify this fault is available to TaT members.

Unlock with Free Trial

Fault Description

The detailed fault description and root cause analysis for this 2004 Hyundai Tucson (JN) is available to TaT members.

Unlock with Free Trial

Verified Repair Solution

The confirmed repair procedure for this 2004 Hyundai Tucson (JN) is available to TaT members. Includes the verified fix and technician tips.

Unlock with Free Trial

Quick Facts

CodeHYUJN04128
Vehicle2004 Hyundai Tucson (JN)
Engine2.7L G6BA 6cyl 24v DOHC MPFI Petrol
ComplaintVisible
Diag. SequenceMembers Only
SolutionMembers Only

Need the Full Fix?

Get the complete diagnostic sequence, verified solution, and technician tips.

More Hyundai Repair Solutions

2020 Hyundai iLoad (TQ) 2.5L D4CB 4cyl 16v DOHC Turbo CRD Diesel Auto · Engine Not Starting 2012 Hyundai Veloster (FS) 1.6L G4FJ 4cyl 16v DOHC VVT Turbo Direct Inj Petrol Manual · Warning Light / Electrical Malfunction 2012 Hyundai iLoad (TQ) 2.5L D4CB 4cyl 16v DOHC Turbo CRD Diesel Auto · Loss Of Power 2011 Hyundai i30 (FD) 1.6L D4FB 4cyl 16v DOHC Turbo CRD Diesel · Loss Of Gears / No Drive - Auto 2016 Hyundai i30 (GD) 2.0L G4NC 4cyl 16v DOHC VVT Direct Inj Petrol · Stalling / Engine Cut-out 2016 Hyundai Tucson (TL) 2.0L D4HA 4cyl 16v DOHC Turbo CRD Diesel Auto · Loss Of Gears / No Drive - Auto

Access the Full Repair Solutions Database

Unlock 6,127 verified repair solutions with complete diagnostic details, confirmed fixes, and technician tips.

© 2026 The Automotive Technician (TaT) — www.tat.net.au