1999 Toyota Avalon Q&A
1999 Toyota Avalon Question: What needs to be done? Check Engine light comes on.
Do you know what codes they pulled on the check engine light? Were the codes related to the valve cover replacement? Did the shop make an attempt to address the problem? - Bret Bodas
If you can tell Bret the codes I can tell you what is likely to have been disconnected. - patrick mannion
hello ,, there is no codes for valve cover gasket. If the light wasnt on when you took it there , then they may have left something unplugged or loose. I would take it back and have them fix it .. If you can tell me what code is stored in the computer , i can probably help you more - mastertech154
The shop might have forgotten to put the ground for the computer back on to the engine or pulled on the O2 wires , but the other Tech is right you need to know the code the car is kicking out so it can be diagnosed properly , Kevvs - kevvs
all you had to do was disconnect the battery and would reset it as well - james b
My "Maintenace Req'd" light came on in March. I continued to drive car @ 1000 miles (2 months)...