Accord LX Sedan L4-2254cc 2.3L SOHC (VTEC) MFI (1998)
Engine Control Module: Customer Interest
MIL ON - DTC P1457 Set
01-011
March 6, 2001
Applies To:
1998-99 Accord - See VEHICLES AFFECTED
MIL Comes On With DTC P1457
(Supersedes 01-011, dated January 23, 2001)
SYMPTOM
The MIL is on, and DTC P1457 [leak detected in EVAP control system (EVAP control canister system)] is set.
PROBABLE CAUSES
The symptom could be the result of any of these causes:
^
An EVAP system component fails.
^
The PCM does a diagnostic test on the EVAP system before the primary heated oxygen sensor (H025) is active. If this happens on two consecutive
driving cycles, the MIL comes on and DTC P1457 falsely sets.
*^ The EVAP system depends on operation of the EVAP control canister vent shut valve for the diagnostic self-test. If the valve does not function
properly, the MIL comes on and DTC P1457 sets. This condition can occur with vehicles normally driven in any of the states listed below Failure of
this component does not affect the performance of the EVAP system.*
VEHICLES AFFECTED
PCM Failure:
1998-99 Accord - L4 models with A/T
EVAP Control Canister Vent Shut Valve Failure:
1998-99 Accord - All models normally driven in any of these states:
Illinois
New Hampshire
Indiana
New York
Iowa
North Dakota
Maine
Ohio
Massachusetts
Pennsylvania
Michigan
Vermont
Minnesota
Wisconsin
CORRECTIVE ACTION
Retrieve the DTC with the PGM Tester, and review the Freeze Data. Depending on whether the feedback condition of the primary H025 reads "open" or
"closed," take the appropriate action described in DIAGNOSIS.