System Inspection

P0457 Evaporative Emission System-Leak detected (tank cap loose/off)

Inspection/Repair - System Inspection

System Inspection

1. Check Fuel Cap
(1) Check fuel cap is firmly tightened.
(2) Check damage or leakage of fuel cap.
(3) Has a problem been found?
YES
1) Repair or replace as necessary and then, Go to "Verification of Vehicle Repair" procedure.
NO
1) Substitute with a known - good PCM and check for proper operation. If the problem is corrected, replace PCM and go to "Verification of Vehicle Repair" procedure.

CAUTION:
There is a memory reset function on scantool that can erase optional parts automatically detected and memorized by PCM.
Before or after testing PCM on the vehicle, use this function to reuse the PCM on the others