Code is common in MAF equipped 8th gen Corollas 00-02. Just take out the MAF, get a cotton swap and some rubbing alcohol and clean up all the black gummy stuff off the wire sensor. It is a 2 minute job from start to finish. Hope this helps..
Trouble code P0171 means: Fuel System Too Lean - Bank 1
Trouble code P0171 means:System too lean (Bank 1)
Trouble code P0171 means:System too lean (Bank 1)
Trouble code P0171 means: Fuel System Too Lean - Bank 1
Trouble code P0171 means System too lean (bank 1)
Trouble code P0171 means:System too lean (Bank 1)
Trouble code P0171 means: System too lean (Bank 1)
Trouble code P0171 means:System too lean (Bank 1)
camshaft position sensor "A" circuit
Trouble code P0171 means: System Too Lean (Bank 1)
Trouble code P0171 means: Bank 1 Combustion Too Lean
Trouble code P0171 means:System too lean (Bank 1)