Incredible Toyota Avalon Gas Cap Check Engine Light References. A faulty upstream oxygen (o2) sensor can cause the check engine light to come on in toyota avalon. Web toyota avalon check fuel cap light is on inspection costs starting from $95.
A faulty upstream oxygen (o2) sensor can cause the check engine light to come on in toyota avalon. The parts and labor required for this service are. Web if your check engine light turns on immediately after you put gas in your toyota avalon, first thing you should check is to make sure the cap isn’t loose — or that it's still on.
