DTC P2459. Opel Insignia HB (Global Epsilon) 2009

For 1990-2009 cars only

Makes 🢒 Opel 🢒 2009 🢒 Insignia HB (Global Epsilon) 🢒 Engine 🢒 Engine Controls and Fuel - 2.0L (Diesel) 🢒 DTC P2459

Diagnostic Instructions

•	Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

•	Review Strategy Based Diagnosis for an overview of the diagnostic approach.

•	Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P2459 58: Diesel Particulate Filter (DPF) Regeneration Frequency

The soot particles accumulate in the channels of the DPF and are burned off at regular intervals, through a process called regeneration or cleaning. The DPF cleaning process prevents the DPF from clogging. Excess soot in filter can cause a drop in engine performance and crack the filter during regeneration.

Conditions for Running the DTC

•	The engine is running.

•	The engine coolant temp (ECT) is between 73-96°C (163-205°F).

Conditions for Setting the DTC

•	The ECM detect to many interrupted regenerations

•	The above condition is met.

Action Taken When the DTC Sets

DTC P2459 is a Type C DTC.

Conditions for Clearing the DTC

DTC P2459 is a Type C DTC.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

Component Connector End Views

Electrical Information Reference

•	Circuit Testing

•	Connector Repairs

•	Testing for Intermittent Conditions and Poor Connections

•	Wiring Repairs

DTC Type Reference

LINK 1803340

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

The following conditions must be met for the ECM to perform the turbocharger learn procedure:

•	The A/C is OFF.

•	The vehicle is in Park or Neutral.

•	Start and idle the engine.

•	The engine coolant temperature (ECT) is greater than 40°C (104°F).

Perform the DPF Service Regeneration.
Verify the DTC does not reset.

⇒	If the DTC resets, replace the DPF filter.