ozz's 04

check engine light came on p0101,p0171,p0174 are the codes i got, any input on what could cause these would be great?

viciousknid

iTrader: (8)

This is where google is your friend.
Do a google search of each code and the first result on the first code says MAF circuit range. ( you can click it for details of course).
Second and third say Bank 1 and 2 are too lean.


So. I'd say clean your MAF sensor and make sure you don't have an Oil type air filter. If you do have an oil type air filter you likely over oiled it and it got on the sensor.
Just clean up the MAF first with some brake cleaner and see if that clears it up for you. Unhook the battery for a bit to clear the code.
Also double check to make sure it's plugged in. I've seen that be the problem before

budhayes3

iTrader: (19)

+1, a faulty or dirty MAF will cause lean codes, and as Joshua mentioned, air filter oil from aftermarket CAI's is a common cause for incorrect MAF readings

Wheatley

iTrader: (12)

Check for any leaks on the intake or around the MAF sensor and also that the intake tube did not come off the throttlebody
Throwing that code and having lean codes at the same time could very well be just that!!