0 like 0 dislike
255 views
by

Hello ,We have a 2005 Nissan Sentra the "Service Engine Soon light went on". So we took it in and the Mechanic said it had a code P0420
The mechanic replace the main catalyst converter with a rebuilt one.
After driving it the next day the light went on again. Took it back and he replaced the Catalyst Converter with another rebuilt one. Dash light went on again, this time he replaced the other converter. Next day, light went one again. This time he replaced the O2 sensor.
That evening the light went on again....HELP
Frank

Vehicle: 2005 Nissan Sentra

1 Answer

0 like 0 dislike
by (13.4k points)
P0420 Catalytic below efficiency Bank 1

Rebuilt catalytic convertor?  You would need a catalytic convertor unfortunately a rebuild does not live up to its standard

Related questions

0 like 0 dislike
1 answer 204 views
asked May 26, 2018 by anonymous
0 like 0 dislike
1 answer 186 views
asked Mar 28, 2018 by nelson
0 like 0 dislike
1 answer 367 views
1 like 0 dislike
2 answers 357 views

36.2k questions

32.2k answers

1.3k comments

22.8k users

Need A Repair Shop?
Find local automotive repair shops in your area.
Does your car have Safety Recalls? → Check here
...