P0021 Nissan - Murano 2004

Question

My 2004 Nissan Murano has always had a slight click, but I noticed it was getting a little worse so I took it in for an oil change. After the oil change, the check engine light came on so I took it to a place and they ran a check. Trouble code p0021 and p0442 both registered. After driving it for a few days, my check engine light has gone off. Does this mean the problems are fixed?

Answer 1

Most likely the car is fine now.

P0021 can we caused by low or dirty oil and P0442 could be a loose gas cap.