check engine light has been a constant problem for the past 3-4 yrs. 01" highlander, 77000 miles, has had o2 sensors changed and fuel mixture sensors changed over this time. Light has come on again(need to have this one read), is this a common problem for this year? Up to the first 5-6 yrs never a problem.
check engine light on 2001 Toyota Highlander
by rooster50 in Farmingdale, NY on July 18, 2010
2 answers 1 comment
ANSWER by Visitor on November 06, 2010
i had the same issue and next thing is to check your catalytic converter. i will almost promise you that that is why the light is on. i had the same issue happen to my car.
COMMENT by Visitor on November 07, 2010
that was the answer--dealer said whole assembly needs to be replaced-front and rear cats. Had this verified by a private shop but they said i might be able to replace just the one thats reading bad with after market equip-do you agree and what was the cost you were quoted-Thanks
ANSWER by Visitor on February 21, 2011
Change your gas cap,make sure gas cap is snug each time you stop at a gas station to get gas.
...part of the emission control system. If the vehicle is driven with this hose disconnected, the Check Engine Light will illuminate.
When changing the air filter, it is easy to knock off a hose on the air filter housing, which i...
What are reasons a check engine light comes on?
Intermittent failure of a purge control valve in the evaporative emission system can cause the Check Engine Light to illuminate. A failed valve should be replaced to correct this problem.