For 1990-2009 cars only
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 P2458 51: Diesel Particulate Filter (DPF) Regeneration TimeDTC P2458 56: Diesel Particulate Filter (DPF) Regeneration Time
DTC P2458 57: Diesel Particulate Filter (DPF) Regeneration Time
Circuit/System Description
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 long regeneration times |
| • | The above condition is met. |
Action Taken When the DTC Sets
DTC P2458 is a Type C DTC.
Conditions for Clearing the DTC
DTC P2458 is a Type C DTC.
Reference Information
Schematic Reference
Connector End View Reference
Electrical Information Reference
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
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:
- Perform the DPF Service Regeneration.
- Verify the DTC does not reset.
| • | 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). |
| ⇒ | If the DTC resets, replace the DPF filter. |
