My wifes Camry is a 2005. The car runs fine. Gas mileage is fine. The check engine light has been on for the past FOUR Years. I refuse to subject myself to the Barracudas at any Toyota dealer and I will NOT PAY to have those Barracudas READ my Codes and prounounce my engine Faulty.....$$$$
Every two years we (RI) have to have the car inspected. This is done by inserting
Their plug into
Your OBD plug under the dash and reading the Codes. This tells THEM that your car is COOL and you PASS....OR NOT.
SO: The day I go to have the car inspected,...I disconnect the negative battery cable and leave it disconnected for an hour or two. Overnight is better. The OBD Computer loses its memory and does not regain that memory for a day or two. The car passes inspection and all is well for the next two years...except the check engine light comes on a day later and I have to LIVE with it. Just sayin. Try IT. You will save thousands in BOGUS repair expences.
BTW: I KNOW more about cars than They Do.
NB
PS: I bought a 1995 Tacoma New in 1996. I sold it in 2007 with 145,000 miles on it. The Check Engine Light haunted me for the whole time. That experience taught me to do what I have recomended above.
You have Nothing to loose.
PPS: I am a stuborn OLD FART.