DTC P1471 (LPL or LPV)
Diagnostic Instructions
DTC Descriptor
| DTC P1471 00: Diesel Particulate Filter (DPF)
Regeneration Incomplete |
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 coolant temperature
(ECT) is between 73-96°C (163-205°F). |
Conditions for Setting the DTC
| • |
The ECM detects too many
interrupted regenerations. |
| • |
The above condition is
met. |
Action Taken When the DTC Sets
DTC P1471 is a Type B DTC.
Conditions for Clearing the DTC
DTC P1471 is a Type B DTC.
Reference Information
Schematic Reference
Engine Controls Schematics
Connector End View Reference
Component Connector End Views
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
| 1. |
The following conditions must
be met for the ECM to perform the turbocharger learn
procedure: |
| |
• |
The vehicle is in Park or
Neutral. |
| |
• |
Start and idle the
engine. |
| |
• |
The engine coolant temperature
is greater than 40°C (104°F). |
| 2. |
Perform the DPF Service
Regeneration. |
| 3. |
Verify the DTC does not
reset. |
| ⇒ |
If the DTC resets, replace the DPF filter. |
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic
procedure.
|
