Maf sensor has been replaced new filter no leaks light keeps coming back

Question

Car runs good with or without service engine light on
Checked every hose ,filter and connection
Cleared code light goes out car funs good light comes back on the next day

Answer 1

P0101 MAF sensor

The fix is to have it reprogrammed, Here is a TSB from Nissan about P0101

Classification:
EC12-012j

Reference:
NTB12-051j

Date:
January 30, 2015

MIL ON WITH DTC P0101

This bulletin has been amended. The Applied Vehicles section and Table A have been updated. Please discard all previous versions of this bulletin.

APPLIED VEHICLES:
2011-2012 Altima Coupe (CL32)
2011-2012 Altima Sedan (L32)
2013-2015 Altima Sedan (L33) with QR25DE engine only
2011-2012 cube(R) (Z12)
2011-2012 Frontier (D40) with VQ40DE engine only
2011-2012 Maxima (A35) 2012 NV Cargo Van (F80) with VQ40DE engine only
2011-2012 Pathfinder (R51) with VQ40DE engine only
2011-2012 Sentra (B16) with MR20DE engine only 2012 Versa Sedan (N17)
2011-2012 Xterra (N50)

IF YOU CONFIRM

	The MIL is ON with DTC P0101 for Mass Air Flow sensor (MAF) stored in the ECM AND
^	There are no drivability concerns.

ACTION

1.	Refer to step 6 in the SERVICE PROCEDURE to confirm this bulletin applies to the vehicle you are working on.
2.	If this bulletin applies, reprogram the ECM.

IMPORTANT : The purpose of ACTION (above) is to give you a quick idea of the work you will be performing. You MUST closely follow the entire SERVICE PROCEDURE as it contains information that is essential to successfully completing this repair.

SERVICE PROCEDURE

NOTE :

^	Most instructions for reprogramming with CONSULT-III plus (C-III plus) are displayed on the CONSULT PC screen.
^	If you are not familiar with the reprogramming procedure, click here (link not active). This will link you to the "CONSULT- III plus (C-III plus) ECM Reprogramming" general procedure.
^	Take the vehicle for a 10 minute drive in order to meet the following Idle Air Volume Learn (IAVL) conditions: > Engine coolant temperature: 70 -100°C (158 - 212°F) > Battery voltage: More than 12.9V (At idle) > Transmission: Warmed up
^	After reprogramming is complete, you will be required to perform Throttle Valve Closed Position, Idle Air Volume Learn, Accelerator Closed Position, and DTC erase.