bsmrx300

I have a 99 RX 300 (about 120K) that is throwing up codes P0171, P0141 and P0330. Can anyone tell me what the codes are and what parts to replace? I am getting about 6 mpg.

code58

Have you cleared the codes and do the same ones come back? That's the 1st thing I would suggest whenever you have multiple codes. See what comes back and that will give you a better idea of what the problem ACTUALLY is.

This is an excellent site for deciphering trouble codes. http://www.obd-codes.com/trouble_codes/lexus/

NEVER start throwing parts at trouble codes. Good way to empty you pockets in a hurry. Take a little time to find your way around that site, it's an excellent one. DON'T just head for the code explanation (especially with multiple codes). Figure out how to use the (entire) site and you'll be a lot more educated. Good Luck!

(there's a whole lot more to the site than that one page!)