Check engine light is on and DTC P0101?

2013 NISSAN ALTIMA
168,000 MILES • 2.5L • 4 CYL • 2WD • AUTOMATIC
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BUSINESSFRED
  • MEMBER
  • 92 POSTS
I had this code scanned
P0101

My car is driving normal, but my Check engine light is on.

I am requesting troubleshooting steps and if possible, a diagram to locate the affected parts to replace/repair.

Thank you
Apr 14, 2024 at 5:40 PM
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JACOBANDNICKOLAS
  • ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
Hi,

As far as the code is concerned, it is related to the mass air flow sensor (MAF). The code can be set by a few things. For example, an engine vacuum leak, a wiring or connector issue, a failed MAF sensor, intake air temperature sensor, and so on.

I attached diagnostics below. However, before you jump into the diagnostics, I would remove and clean the MAF sensor. They make a special cleaner specifically for them.

Here is a link that shows how to service it:

https://www.2carpros.com/articles/mass-air-flow-service

The mass air flow sensor is located in the air filter box. See pic 1 below. The remaining pics are the diagnostics related to the code.

Let me know if this helps or if you have other questions.

Take care,

joe

See pics below.
Apr 14, 2024 at 8:37 PM
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