2000 Lincoln LS "trouble code po420" Questions

TROUBLE CODES= P0301 & P0305 ? WHAT DO THEY MEAN ? po420 codes what does it mean http://www.obd-codes.com/p0301 http://www.obd-codes.com/p0305

...trouble code po420 I have a 2000 corolla. it had the check engine light on, and trouble code "po420". i was using unleaded fuel 89. after the check engine light was triggered, i change to premium ...

...trouble code P0420 - Catalyst System Efficiency ... If they have failed, it is likely due to something else that caused it to fail. ... the catalytic converter is broken or failed, it may be ...

trouble codes p1768,po300,and a po420. what does this mean? I have tow of the three requested codes. po300 is misfire detected at multiple cylinders. See po301-306 represent the cylinder # misfire. So

...po420 bank 1 and po430 bank 2 error codes caused a failed inspection sounds like O2 sensors to me. I havent changed one on a mustang yet but I havent had any trouble with any others that I have done, ...

...PO420 NEED TO FIX SO I trouble codes PO174,PO401,PO420 NEED TO FIX SO I CAN GET IT SMOGGED IN CA. P0174 means Fuel Trim too Lean (Bank 2) P0401 means Exhaust Gas Recirculation Flow Insufficient ...

trouble code PO420 need to know what trouble code means catalyst system running below threshold. It means you have a catalytic converter problem. 

i have trouble code po420 and po174 .where do i start trouble shooting check your MAF sensor and air filter and housing.

...07 3.3L V6 have trouble code P0420 CODE PO420 CATALYST LOW EFFIENCY BELOW THRES HOLD BANK 1 Generally speaking the catalytic converter is worn out and the system reads this and sets the code ...

Trouble Code p0420 and p1399 The problem occurred suddenly while accelerating. Now sputter badly. Ran fine before this. code po420 refers to cat converter system bank1 - efficiency below ...