Check engine light is on and DTC P0101?

Tiny
BUSINESSFRED
  • MEMBER
  • 2013 NISSAN ALTIMA
  • 2.5L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 168,000 MILES
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
Sunday, April 14th, 2024 AT 5:40 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
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.
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Sunday, April 14th, 2024 AT 8:37 PM

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