Ford Taurus 2004 Sedan SES DOHC. (The car is actually in the shop right now and I told him to hold off until I get more info.)
Took the car to the local shop to get the spark plugs replaced. Because of the location of the rear spark plugs lots of parts have to come off the engine before they can be accessed.
A week later the check engine light came on. He just did the $100 diagnostic and says he didn't find anything. The error code is P2270 for the HO2S.
Question: How likely is it that during the spark plugs (and steering fluid flush) that they did something that caused this? OR is it completely unrelated?
Any help is greatly appreciated.
Since I posted I OKed him to replace the sensor.
On a side issue, unlike the dealer, he doesn't have the $100 diagnostic fee go towards the work being done - so I am up to $260 for replacing a sensor! Am I getting ripped off?