Repair guides and support for cars manufactured by the Nissan Motor Company Ltd.

273 Questions View all

07' Nissan Sentra SER Needs help with a Check Engine Light Issue!

Getting Error P2a03 from the OBD guage. We've had the O2 sensors checked, and they all seem functional. Mechanic thinks it needs new gaskets.

Any thoughts?

Answered! View the answer I have this problem too

Is this a good question?

Score 0


How does your Nissan run/idle? How is the fuel consumption?


Add a comment

1 Answer

Chosen Solution

This post from a Nissan Z forum seems to say that it was in fact a faulty O2 sensor. If you read the replies someone does mention something about a gasket, but that it was for a P2A00, not P2A03.

The original poster there had an incident where he scraped the bottom of his car. Did anything like that happen to your Sentra?

Was this answer helpful?

Score 1
Add a comment

Add your answer

redearthcognac will be eternally grateful.
View Statistics:

Past 24 Hours: 0

Past 7 Days: 0

Past 30 Days: 0

All Time: 691