1999 Lexus GS300 Q&A
1999 Lexus GS300 Question: Check engine light
there are over 1500 possible codes. you need a shop to do a real diag, not a free code pull to determine the issue and give you a bid. Roy - mastertech6371
If your gas cap is tight and you dont have a hose off the evap purge valve from a quick lube checking your air filter then it is most likely a bad air fuel ratio sensor,These are common on these cars.But you do need to have the code pulled with a scan tool. - ambler
The Check Engine Light may illuminate due to an EVAP system fault. These faults are commonly EVAP canister or gas cap...
The Check Engine Light may illuminate due to an O2 sensor heater fault. Most commonly the affe...
What does it mean when they check engine light and thte VSC off light is on?
90% of the time yhat im in my lexus the car only has accelration right at the bottom,but when it has full accelration oooh what a beauty,how can you HELP,the VSC lights come on religousely moments ...
New heads as well, changed solenoid. now ECM problem we think. Any tricks to turning off check engine light.