I was told that by turning your ignition key on and off in a certain sequence, that different codes would show up so you could diagnose problems with your car. Could anyone tell me how to do this?
i receneltly installed a short ram intake for my car, after a while the engine light came on and i got the code read and it said "oxygen too lean"? amyone know how i can fix this? i erased the codes but it still came back after a little while :( help