I took the car to Auto Zone yesterday and there were 4 CEL codes. Code 1- 522-Selector Lever position sensor; Code 2- 113-Intake air temperature sensor; Code 3- 176-Oxygen sensor-mixture too weak; Code 4- 543-Fuel pump circuit. Does anyone know what I need to do about this? I just bought this car not even half a year ago and I've already had to replace the alternator... what next? And today I took it to the mechanic to get a ballpark figure. They said they'd have to keep the car because it was too late in the day. If I can expect to pay a lot for the repairs and this to be a recurring problem should I go ahead and get a new car? The guy at Auto Zone didn't sound too promising and said this could be the start of my problems.