Failed emissions test for codes P0101 and P0128

Question edited for clarity.
Question moved to model category.

It's not an emissions code. It regulates air going into the engine for combustion. 'Emissions' is what comes out at the exhaust end after combustion and emitted (emission) into the air we breathe.

https://www.justanswer.com/nissan/fbhcg-2011-nissan-altima-2-5-p0101-code-new-maf.html#:~:text=The%20issue%20is%20a%20faulty,that%20has%20the%20needed%20equipment.

Did you replace the MAF with and OEM version or one made in China or Mexico? Don't go cheap on sensors.

Codes need clearing with and scan tool, but it is keep coming back, the fault is still there.

Check for an inlet manifold leak. Air is entering where it shouldn't.

https://www.google.com/search?q=2011+Altima+P0101+code

..

A drive cycle should be enough. Getting the engine up tp temperature and clearing the code will affect the fuel/air mix.

I means that the vehicle failed it's emissions test as it failed the digital trouble code reading test 3
the testing station tests the exhaust emissions and the onboard computer
Your computer failed the test

Code P0128 is for the cooling system you should replace the thermostat. Code P0130 H02S circuit closed loop (cl) performance (bank1 sansor1) you have to replace the #1 oxygen sensor.

P0101 is the Mass Air Flow Sensor error,
http://www.obd-codes.com/p0101


P0128 Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature

Ok, it's not the transmission.
P0101 maf sensor ( mass air flow) sensor. Change the sensor, it is located in the air intake hose that runs from the air filter housing to the throttle plate/ throttle body. Disconnect the wire from it and loosen clamps ( if equipped) and pull hose from it.
P0128 thermostat is below temperature specs, change to a 190 or 195 degree thermostat. auto parts store should be able to tell you which one you need.
P0155 the heater circuit in the oxygen sensor is bad, need new one. That is on bank 2 sensor #1. If it is a V6, looking at the engine, it would be on passenger side, screwed into the exhaust pipe near the exhaust manfold.

well go back and ask for proper print out of what the emmisions readings are ,i cannot beleave that a vehicle test station can fail a vehicle and not tell you what the emmisions readings are but give you a lot of useless p numbers ,dont they put a probe up the exhaust and test it properly ,They would have field day trying to test europeon cars here in europe with all the encrypted software used on vehicles here and the vehicle shutting its self down with the immobilisor and throwing out code p whatever for illegal access to the ECU.any way try changing the lambada sensors as i think that this is what code P171 and 174 refer too

Definition of Diagnostic Trouble Code P0128 Category Powertrain Definition Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)
Definition of Diagnostic Trouble Code P0133 Category Powertrain Definition O2 Sensor Circuit Slow Response Bank 1 Sensor 1

Definition of Diagnostic Trouble Code P0496 Category Powertrain Definition Evaporative Emission System High Purge Flow

If you failed an emmisions test it must be an O2 sensor , there are a couple of them your mechanic should be able to look up that code for you
most probably an O2 upstream or downstream sensor

po128 is a coolant temp sensor problem, check wiring to sensor if ok replace sensor,good luck.