P0457

Test 1 - 2:

Test 3 - 4:

Test 5 - 6:

Test 7 - 8:

SYMPTOM
P0457-LOOSE FUEL CAP

WHEN MONITORED
Ignition on. Ambient temperature between 4° C and 32° C (39° F and 89° F) Closed Loop fuel system.

SET CONDITION
The PCM has detected an EVAP System leak after a fuel level increase. Two Trip Fault. Three good trips to turn off the MIL.

POSSIBLE CAUSES
- Good trip equal to zero
- Loose or missing fuel fill cap
- Intermittent condition
- NVLD service test
- EVAP operative emission leak detection
- EVAP purge solenoid operation
- NVLD switch operation