I have one problem causing everything else or several seperate problems and I need help.

1. Engine light - code P0171 on 2 and P0171 on 1. I used injection cleaner in the gas tank and the light went off for a day or so and then came back on. Do I need to use injector cleaner several times to clean out piston 1 and 2?

2. This has me stumped - Key in ignition message and beep, beep, beep and the key is out. The car thinks the key is still in??? I can't lock the doors using the remote either.

3. Getting the transmission default warning and it's stuck in park. I've lifted the leaver and overridden the leaver with the white release button below, but I read somewhere some terminals/contacts need cleaning - where and is that the case?

Are these problems related to one another or seperate??

thanks