Toyota FJ Cruiser Forum banner

p0171

  1. MAF p0171 and Catalytic p0430 error codes

    Engine Performance
    I used to run K&N filters in all my vehicles so putting one in the FJ was just a normal "mod" till my MAF started throwing codes on my Torque+ App. A little research and out came the K&N, removed and cleaned the MAF with MAF cleaner spray, reset codes... still threw an error after about 50...
Top