ECD SYSTEM, Diagnostic DTC:P2002

DTC Code DTC Name
P2002 Particulate Trap Efficiency Below Threshold (Bank1)

DESCRIPTION

A284208E02
Tip:

  • For more information on the DPNR*1 catalytic converter and TOYOTA D-CAT*2, refer to the following procedures (Click here).

    • *1: Diesel Particulate NOx Reduction System

    • *2: Diesel Clean Advanced Technology

  • If P2002 is present, refer to the DTC table for TOYOTA D-CAT (Click here).

Tip:

The DPNR catalyst has the ability to reduce particulate matter (PM), hydrocarbons (HC), carbon monoxides (CO) and nitrogen oxides (NOx). The DPNR catalyst is a monolithic type catalyst. Alternating passages in the catalyst have either their inlet or outlet blocked. This forces the exhaust gasses to flow through the walls of the passages (see illustration). Due to the flow of the exhaust gases through microcavities in the passage walls, it is called a "wall-flow" type converter.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

P2002

Particulate Trap Efficiency Below Threshold (Bank1)

The Catalyst Record exceeds the threshold (Thermal deterioration malfunction)

(1 trip detection logic).

DPNR catalytic converter (Exhaust manifold converter sub-assembly)

Comes on

DTC stored
Table 1. Related Data List

DTC No.

Data List

P2002

DPF Thermal Deteriorate

MONITOR DESCRIPTION

In order to detect abnormality in the DPNR catalyst, the ECM monitors the exhaust gas temperature as well as differential pressure in front of and behind the DPNR catalyst.

  • Thermal deterioration malfunction

  • Furthermore, the ECM calculates and integrates the Catalyst Record of catalyst thermal deterioration data with the catalyst temperature. If Catalyst Record exceeds the threshold, the ECM interprets this as a malfunction in the DPNR catalyst and illuminates the MIL.

A193875E11

CAUTION / NOTICE / HINT

Note:

After replacing the exhaust manifold converter sub-assembly (DPNR catalyst), clear the thermal deterioration data stored in the ECM.

Tip:

Read freeze frame data using the GTS. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.

PROCEDURE

  1. REPLACE EXHAUST MANIFOLD CONVERTER SUB-ASSEMBLY

    Tip:

    When the DPNR catalytic converter (Exhaust manifold converter sub-assembly) is replaced, the catalyst record of DPF thermal deterioration stored in the ECM must be cleared.

    1. Replace the DPNR catalytic converter (Exhaust manifold converter sub-assembly).

      Click here

    Result

    Proceed to

    NEXT
    NEXT

  2. CATALYST RECORD CLEAR

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

    3. Enter the menu options in this order: Powertrain / Engine / Utility / Catalyst Record Clear.

      Powertrain > Engine > Utility

      Tester Display

      Catalyst Record Clear

    Result

    Proceed to

    NEXT
    NEXT

    END