DTC P2459
DTC P2459 |
Diagnostic Instructions |
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Perform the
Diagnostic System Check - Vehicle
prior to using this diagnostic procedure.
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Review
Strategy Based Diagnosis
for an overview of the diagnostic approach.
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Diagnostic Procedure Instructions
provides an overview of each diagnostic category.
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DTC Descriptor |
DTC P2459 58
Diesel Particulate Filter (DPF) Regeneration Frequency
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 |
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The engine is running.
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The engine coolant temperature (ECT) is between 73-96°C (163-205°F).
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Conditions for Setting the DTC |
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The ECM detects too many interrupted regenerations.
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The above condition is met.
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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
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Circuit Testing
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Connector Repairs
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Testing for Intermittent Conditions and Poor Connections
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Wiring Repairs
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DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification |
1. |
The following conditions must be met for the ECM to perform the DPF Service Regeneration:
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The A/C is OFF.
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The vehicle is in Park or Neutral.
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Start and run the engine.
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The engine coolant temperature is greater than 80°C (176°F).
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2. |
Perform the DPF Service Regeneration.
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3. |
Verify the DTC does not reset.
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4. |
If the DTC resets, replace the DPF filter.
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Repair Instructions |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.