Dtc Summary

DTC No.

Monitoring Items

Malfunction Detection Conditions

Trouble Areas

Detection Timings

Detection Logic

P2401

Leak detection pump stuck OFF

Leak detection pump creates negative pressure through reference orifice, and EVAP system pressure measured to determine 0.02 inch leak criterion. 0.02 inch leak criterion measured at start and at end of leak check. If system pressure higher than -1.06 kPa (-7.95 mmHg)*, or lower than -4.85 kPa (-36.38 mmHg)*, ECM determines that leak detection pump stuck OFF.

• Canister pump module

• Connector/wire harness (Canister pump module - ECM)

• Leakage from EVAP system

While ignition switch OFF

2 trip

P2402

Leak detection pump stuck ON

Leak detection pump creates negative pressure through reference orifice, and EVAP system pressure measured to determine 0.02 inch leak criterion. If system pressure higher than -1.06 kPa (-7.95 mmHg)*, or lower than -4.85 kPa (-36.38 mmHg)*, ECM determines that leak detection pump stuck ON.

• Canister pump module

• Connector/wire harness (Canister pump module - ECM)

• ECM

While ignition switch OFF

2 trip

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