SFI SYSTEM(w/ Canister Pump Module), Diagnostic DTC:P142200, P142300

DTC Code DTC Name
P142200 Evaporative Emission Fuel Tank (Small Leak)
P142300 Evaporative Emission Fuel Tank (Gross Leak)

DTC SUMMARY

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P142200 Evaporative Emission Fuel Tank (Small Leak)

Leak detection pump creates negative pressure (vacuum) in fuel tank and fuel tank pressure is measured. Reference pressure is measured at the start and at end of leak check.

If stabilized pressure is higher than third reference pressure, ECM determines that fuel tank has a small leak.

  • EVAP leak (fuel tank - fuel vapor-containment valve)

  • Fuel vapor-containment valve

  • Connector/wire harness (fuel vapor-containment valve - ECM)

  • ECM

 Comes on DTC stored SAE Code: P1422
P142300 Evaporative Emission Fuel Tank (Gross Leak)

Leak detection pump creates negative pressure (vacuum) in fuel tank and fuel tank pressure is measured. Reference pressure is measured at the start and at end of leak check.

If stabilized pressure is higher than [third reference pressure x 0.2], ECM determines that fuel tank has a large leak.

  • EVAP leak (fuel tank - fuel vapor-containment valve)

  • Fuel vapor-containment valve

  • Connector/wire harness (fuel vapor-containment valve - ECM)

  • ECM

 Comes on DTC stored SAE Code: P1423
DTC No. Monitoring Item Detection Timing Detection Logic SAE Code
P142200 Fuel tank small leak

EVAP monitoring

(power switch off)

 2 trip P1422
P142300 Fuel tank gross leak P1423

DESCRIPTION

The description can be found in the EVAP (evaporative emission) System.

Click here

MONITOR DESCRIPTION


  1. P142200: Fuel tank small leak

    In operation G, the leak detection pump creates negative pressure (vacuum) in the fuel tank and the fuel tank pressure is measured. If the stabilized system pressure is higher than the third reference pressure, the ECM determines that the fuel tank has a small leak. The ECM illuminates the MIL and stores the DTC (2 trip detection logic).

  2. P142300: Fuel tank gross leak

    In operation G, the leak detection pump creates negative pressure (vacuum) in the fuel tank and the fuel tank pressure is measured. If the stabilized system pressure is higher than [third reference pressure x 0.2] (near atmospheric pressure), the ECM determines that the fuel tank has a large leak. The ECM illuminates the MIL and stores the DTC (2 trip detection logic).

A003O78E01

MONITOR STRATEGY

Required Sensors/Components

Fuel tank pressure sensor

Fuel vapor-containment valve
Frequency of Operation Once per driving cycle

CONFIRMATION DRIVING PATTERN

Note


  • The Evaporative System Check (Automatic Mode) consists of 9 steps performed automatically by the GTS. It takes a maximum of approximately 40 minutes.

  • Do not perform the Evaporative System Check when the fuel tank is higher than 90% full because the cut-off valve may be closed, making the fuel tank leak check unavailable.

  • Do not start the engine during this operation.

  • When the temperature of the fuel is 35°C (95°F) or higher, a large amount of vapor will from and any check result will be inaccurate. When performing the Evaporative System Check, keep the fuel temperature less than 35°C (95°F).


  1. Connect the GTS to the DLC3.

  2. Turn the power switch on (IG).

  3. Turn the GTS on.

  4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  5. Turn the power switch off and wait for at least 30 seconds.

  6. Turn the power switch on (IG).

  7. Turn the GTS on.

  8. Enter the following menus: Powertrain / Engine / Utility / Evaporative System Check / Automatic Mode.

  9. After the "Evaporative System Check" is completed, check for All Readiness by entering the following menus: Powertrain / Engine / Utility / All Readiness.

  10. Input the DTC: P142200 or P142300.

  11. Check the DTC judgment result.

    GTS Display Description
    NORMAL

    • DTC judgment completed

    • System normal
    ABNORMAL

    • DTC judgment completed

    • System abnormal
    INCOMPLETE

    • DTC judgment not completed

    • Perform driving pattern after confirming DTC enabling conditions
    N/A

    • Unable to perform DTC judgment

    • Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

    Tech Tips


    • If the judgment result is NORMAL, the system is normal.

    • If the judgment result is ABNORMAL, the system is malfunctioning.

PROCEDURE


  1. GO TO EVAP SYSTEM


    1. Refer to EVAP System.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    END