DTC P0457 Acura
Evaporative Emission (EVAP) System Leak Detected Fuel Fill Cap Loose or Missing
Evaporative Emission (EVAP) System Leak Detected Fuel Fill Cap Loose or Missing
Description
Engine coolant temperature before EVAP purge control starts 140 ºF (60 ºC), 2 mph (2 km h), Barometric pressure, 76 kPa (22.5 in. Hg, 569 mmHg), Battery voltage 10.5 volts or more, fuel trim 0.73-1.47, system is in close loop. The execution time is continuous and the duration time is 12 seconds or more. The output from the fuel cap monitor is 0.053 or less for at least 12 seconds (when there is no NG judgment history in this drive cycle). P0455 or P0456 are judged as NG. NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot.
Cause and Solution
Faulty fuel fill cap seal missing or damaged, fuel fill pipe damaged
Poor connections or loose terminals at the FTP sensor, the EVAP canister vent shut valve, and the PCM
Faulty routing of the EVAP canister vent tube
Video Guide
Diagnostic Info
- DTC Code: P0457
- Brand: Acura