1999 Honda Accord Check engine light

Hi alijah01,

P1457 = EVAP Control System Leakage ( EVAP canister system)

Probablre causes :

1. An EVAP system component failure.
2. The PCM doeas a diagnostic test on the EVAP system before the primary heated oxygen sensor (HO2S) is active. If this happens on 2 consecutive driving cycles, the MIL comes on and DTC P1457 falsely sets.
3. The EVAP system depends on operation of the EVAP control canister vent shut valve for the dignostic self-test. If the valve does not function properly, the MIL comes on and DTC P1457 sets. This condition can occur with vehicle normally driven in some designated states. Failure of this component does not affect the performance of the EVAP system.