Nissan XTerra Forum banner

catalyst system

  1. Catalytic Converter Failure After Engine Tune-Up - 2003 XTerra

    Repair Questions
    2003 Xterra SE 6-Cyl I recently had the engine tuned-up (gaskets, wires, lines, spark plugs, etc. replaced) after what seemed like oil leaking from the gaskets. Within 25KM of leaving the shop, the engine light came on, and so I brought it back. They determined it was the Catalytic Converter...
  2. Error codes and choppy engine issues

    Repair Questions
    I have a 2003 X with the 3.3-SC engine that now has a little over 251k miles on it. Had the truck since it was brand new and plan to keep it. Lately, I've been battling some issues like oil leaks, etc. I just had the rear main and crankshaft seals replaced to stop oil leaks and did the valve...
  3. Catalytic Converters 2000 Xterra Removal

    Repair Questions
    Hello; I recently bought a 2000 Xterra 3.3 v6 SE, it will need a new motor soon, but I managed to fix the head gasket for now. However it was leaking coolant through the exhaust for a long time. I had the compression and other things checked at a garage and they told me the converters were...
  4. P0430 and P0328 need help with these codes

    Repair Questions
    My 2004 Xterra 3.3 V-6 has the service engine light on and the codes that come up are P0430 Catalyst system efficiency below threshold (bank 2) and P0328 Knock sensor 1 Circuit high input (Bank 1 or single sensor) (3). It did not pass emissions so I need to correct this so I can get my tags...