Can you have codes with no check engine light?
There are other cases where there’s no check engine light but codes. Some computers are programmed to see a problem, store a code, and light the check engine light. Then later, if the problem does not reoccur, the computer will turn off the check engine light and store the code as a HISTORY CODE.
Can you tell if a code has been cleared on a car?
If the vehicle does not support the above datapoints you can use the smog check feature to check for indications of codes being recently cleared. When codes are cleared all vehicle emissions tests are reset and will display a status of ‘not complete’.
What does check engine light on Toyota Avalon mean?
A check engine light can indicate a broad spectrum of problems with your 2008 Toyota Avalon. In some cases you need to pull over immediately to prevent damage while in others you merely need to tighten you gas cap next time you stop in order to reset the service engine soon light.
What is diagnostic trouble code for Toyota Avalon XLS?
2006 Avalon xls: Scan DTC (Diagnostic Trouble Codes) is P0456. Found gas cap not tightened, re-apply it till 3 clicked. I did NOT use OBD scanner to erase the code, and I did NOT disconnect the battery. The light of “Engine Check”, VSC were still on.
What to do if your Toyota Avalon has an oil leak?
2008 Toyota Avalon Limited 3.5L V6 Plug the oil leak If you are leaking oil and parking on your oil spots each night, the oil is breaking down your tires’ rubber 2008 Toyota Avalon Limited 3.5L V6
How to reprogram a Toyota Avalon after a battery change?
The light will turn off only after several driving trips. Reprogram the power windows and their jam prevention function to work again, if they no longer function, by holding down the power window button to lower the window halfway then pulling up the window button to close it. Do this for the power window switches for both front doors.