2012 Isuzu NNR85 (NNR) — Repair Solution

3.0L 4JJ1 4cyl 16v DOHC Turbo CRD Diesel Manual · DPF Light On / Flashing · Engine

Isuzu NNR85 (NNR) DPF Light On / Flashing Engine Diagnostic Sequence Available

Vehicle Details

Make: Isuzu
Model: NNR85 (NNR)
Year: 2012
Engine: 3.0L 4JJ1 4cyl 16v DOHC Turbo CRD Diesel Manual
Kilometres: 320,977
Area: Engine
Category: DPF Light On / Flashing

Customer Complaint

Can't do a DPF burn.

Problem Summary

The orange DPF light flashes. When the DPF button is pressed the light goes solid and the engine sound changes but doesn't increase revs. The problem has been present since the engine was rebuilt.

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 2012 Isuzu NNR85 (NNR) is available to TaT members.

Unlock with Free Trial

Verified Repair Solution

The confirmed repair procedure for this 2012 Isuzu NNR85 (NNR) is available to TaT members. Includes the verified fix and technician tips.

Unlock with Free Trial

Quick Facts

CodeISUNN12131
Vehicle2012 Isuzu NNR85 (NNR)
Engine3.0L 4JJ1 4cyl 16v DOHC Turbo CRD Diesel Manual
ComplaintVisible
Diag. SequenceMembers Only
SolutionMembers Only

Need the Full Fix?

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

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