I just want to know which to get to get this change or get it fixed up. because I don't know anything about this. is there different kind of sensor or is it just one. please if you can let me know. I really appreciate it

1998 Dodge Durango 5.9L
P0420 Catalyst Efficiency Below Threshold (Bank1)..

can someone help me out with this please

thank you
Please email me on this for this question pnaymom1975@yahoo.com

thank you
Melanie

 

Look at this page it's describing that error and what it means.

http://www.p0420.com/