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P0171 code is registered from autozone code scanner. just…

Customer Question
P0171 code is registered...

P0171 code is registered from autozone code scanner. just changed out maf sensor, heard a knock and then the check engine light came on. rough idle at rest, almost stalls and then revs slightly higher than normal now.....thinking an o2 sensor is the culprit

Mechanic's Assistant: Does the light stay on, or does it blink?

Stays on

Mechanic's Assistant: What is the model/year of your Nissan?

2012 sv

Mechanic's Assistant: Are you fixing your vehicle yourself? What have you tried so far?

Yes i am. like i said before. just replaced maf sensor and then the check engine like came on. it was driving poorly and i believe there was a leak in the aftermarket intake. i believe i fixed the leak, but i still feel the o2 sensor is causing the issues.

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

I think thats it

Submitted: 1 year ago.Category: Nissan
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Answered in 45 minutes by:
8/3/2017
Nissan Mechanic: Dan, Technician replied 1 year ago
Dan
Dan, Technician
Category: Nissan
Satisfied Customers: 26,024
Experience: Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
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Nissan Mechanic: Dan, Technician replied 1 year ago

What is your vin?

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