DTC P1455 Diesel Particulate Defuser (DPD) Insufficient Regeneration (4JJ3 with DPD)

1. DTC P1455 description

The DPD filter traps PM emitted from the engine. The ECM calculates the PM accumulation amount in the DPD filter based on various data. DPD automatic regeneration starts when a certain level of PM has accumulated or when the vehicle has been driven the predetermined mileage. If automatic regeneration is not completed for some reason, the DPD operator regeneration indicator light in the instrument panel cluster will flash to request the driver to perform DPD regeneration. If the DPD regeneration that is requested to the driver has not been started, or if the DPD regeneration has not been completed properly and the DPD regeneration interval is longer than the predetermined mileage, the DTC is set.

2. Condition for setting DTC P1455

Condition for running the DTC

The engine run time is 5 seconds or more.
DTCs P0500 and P060B are not set.

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0500 Vehicle Speed Sensor".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P060B Internal Control Module A/D Processing Performance".

Condition for setting the DTC

The ECM detects that the vehicle has run 500 km {311 miles} or more since the last DPD regeneration.

3. Action taken when DTC P1455 sets

The ECM illuminates the MIL. Refer to Action taken when DTC sets - Type A.

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC type definitions".

The ECM limits the fuel injection quantity.
The ECM inhibits the cruise control.

4. Condition for clearing DTC P1455

Refer to Conditions for clearing the MIL/DTC - Type A or Type B.

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC type definitions".