Mechanics

NISSAN SENTRA SENSOR PROBLEM

2000 Nissan Sentra • 105,000 miles

Hi,
I am using this vehical since 2010 & since last year I am getting MIL light on once I get the light reset it works fine for 1K ~ 3K miles & then again come up, It shows only PO420 code.

What should be the line of action should I replace the o2 sensor or Cat Conv.

Abhijit Kulkarni
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Abhijetkulkarni
February 28, 2013.



If you want to be sure of which to replace, use the scan tool to monitor the O2 sensor. You might need to replace both.

KHLow2008
Feb 28, 2013.