Bought used 2004 Nissan Maxima. First car in over 2 years. Finally saved enough to get wheels so I did not have to walk anymore. Super excited, UNTIL...NOW! Went to Autozone to purchase a fuse for the hi-lo beams, completed that task, and thats when all these issues started. Backing out of parking space, and the car goes into limp mode?? Went inside and consulted with the employees; they put the code reader on the car, and the only thing that came up was the "THROTTLE BODY INJECTOR UNIT.". (at the wounderful price of $216.00) I really did not understand how this could occur out of the blue, but I just purchased the part and had a friend tow the car to my home where I could comfortably work on replacing that part. Replaced the part, put the battery posts back on, and "CAR STILL IN THAT LIMP MODE." Fustrated and confused, I started doing some research and found this website, and have been reading ever since. (fast forward) To find out my battery terminal fuse thing was blown, so I replaced it. WAS EXCITED, BUT HOPEFUL, only to still be in limp mode AGAIN!! Code reader time AGAIN! Now it tells me CODES: P1168, P1122, P1126, P1031, P1051, P1148. PLEASE SOMEONE HELP ME! I do not understand at all! Now I am back to walking. I am a full-time student, and I got ran over by a car last year, so I have an extremely hard time getting anywhere walking anyways, and even more so since the injury. I do not have much money, but I am willing to listen and trying to stay hopeful. Thank you!