Dtc Summary

Malfunction

DTC

Monitoring Items

Detection Conditions

Trouble Areas

Detection Timings

Detection Logic

Leak detection pump

creates negative

• Fuel cap (loose)

pressure (vacuum) in

• Leakage from

EVAP system and

EVAP line

EVAP system

(Canister - Fuel

pressure measured.

tank)

0.02 inch leak

• Leakage from

criterion measured at

EVAP line

While ignition switch OFF

P0455

EVAP gross leak

start and at end of

(Purge VSV -

2 trip

leak check.

Canister)

If stabilized pressure

• Canister pump

higher than [second

module

0.02 inch leak

• Leakage from

criterion x 0.2], ECM

fuel tank

determines that

• Leakage from

EVAP system has

canister

large leakage.

Leak detection pump

creates negative

pressure (vacuum) in

EVAP system and

EVAP system

pressure measured.

0.02 inch leak

P0456

EVAP small leak

criterion measured at start and at end of

Same above

While ignition switch OFF

2 trip

leak check.

If stabilized pressure

higher than second

0.02 inch leak

criterion, ECM

determines that

EVAP system has

small leakage.

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

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