Originally Posted by
RhinoZ24
This could be quite a few things. Did you clear the code after fixing the leak and it still came back? Could be: A dirty MAF (especially if you use an oiled air filter) Bad PCV valve, or leaking PCV lines Exhaust leak as you said it might be Clogged fuel filter (if you haven't changed it within 30K miles do it, but that would likely affect both banks not just one) Dirty injectors so running some fuel system cleaner through the tank might be a good idea. Let us know what you find!