check engine light due to gas cap being loose or worn,is what i was told. on 1992 Lexus LS400

check engine light is on .had it diagnosted I was told the gas cap was causing problem,I changed cap and light is still on.

by in Evansville, IN on May 02, 2011
2 answers
ANSWER by on May 02, 2011
It takes two "drive cycle trips" to "turn off" the light. The computer looks at certain criteria before it will naturally turn off the light, if not a scan tool is required to turn off the light.
ANSWER by on May 04, 2011
ventilation line restriction in gas line.

Related Content