SOURCE: 1999 lexus es300
This has been happening to my car as well. It typically happens when your oxygen sensors start to wear out. Mine does it once in a while and I have the local auto store reset it. Go to your nearest auto store and have them tell you what code it is and ask them to reset the OBD so the light goes out. If the light comes on right away and the code has to do with your oxygen sensors, have them replaced. There are three, two are easy to replace, one takes some effort as it is in a tough to get to spot. The dealer will charge you a fortune to replace them so do it yourself or through a local mechanic. It is a very simple task other then the access.
SOURCE: 2000 lexus es300 error code p0440, p0441, p0446
P0440 Evaporative Emission System, P0441 Evaporative Emission System Incorrect Purge Flow , AND P0446 Evaporative Emission System Vent Control Circuit
SOURCE: car codes
When you have P0440, P0441 and P0446, it is a very good bet that the fuel cap was loose, or the fuel cap rubber seal is compromised. You will get all three of those codes every time that the cap is loose. Always make sure that the fuel cap is as tight as you can get it after you refuel.
SOURCE: Trac Off and Engine light stay lit
well, the first to do is an oil service to your car, after disconnect the negative battery terminal few minutes to reset
SOURCE: trac off and check engine light for lexus es 300
If the light comes back on you to retrieve engine codes and see if the car has a misfire on one of the cly.
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