Hello I purchased a 2000 rx300 2 days ago from a dishonest person. When I purchased it the guy said there was no engine codes and it was super reliable. The vehicle has 150k miles on it and 2 hours after I paid him I get P0171, and P1130 codes. Now today I drove it and it shows p0300, p0301, p0303, p0305, P0171, p1130 and P0300p, p0301p, p0303p, p0305p, p0171p, p0172p. The only repair paperwork that I found in the vehicle says that a couple of coils were changed and the catalytic converter. Other than that I am clueless. I ordered a Haynes repair manual it should be here tomorrow. Any advice would be greatly appreciated thanks for your help in advance.