Code P0101

[CDenton]

Code P0101 keeps coming up after long drives. The dealer sold me a mew replacement air sencor but it continues to pull up the code. It has a new air filter anyone else had this problem or know the fix?

 

[Bob4x4]

The first step should be to flash the pcm per tsb 18-005-13

 

[CDenton]

Thanks Bob, but you are speaking over my head. Is this something that the dealer dose? What do I need to ask for? Thanks

 

[Bob4x4]

In January 2013 there was a pcm update for software that addressed your dtc p0101.If your truck has had any pcm updates after this date disregard this tsb as a possible fix.The Mass Air Flow Sensor is a frequency based device. A constant voltage is applied to a heated wire. This wire is positioned in the air stream and is heated by the electrical current that the voltage produces. As air flows across it, it cools down. The heated wire or film is a positive temperature coefficient (ptc) resistor. This means that it's resistance drops when it's temperature drops. The drop in resistance allows more current to flow through it in order to maintain the programmed temperature. This current is changed to a frequenc
y which is sent to the Powertrain Control Module (PCM) and interpreted as air flow. Adjustments for air temperature and humidity are taken into consideration since they also affect the temperature of the heated wire or film. This monitor fails if the MAF correction factor is beyond it's calilbrated range. The PCM will turn on the MIL lamp immediately after this monitor runs and fails. The PCM will turn off the MIL lamp when the diagnostic runs and passes in four consecutive drive cycles.

Thepossible causes are
[TABLE="align: center"]

[h=3]Possible Causes[/h]


TURBOCHARGER, EGR OR INTAKE AIR SYSTEM RELATED DTCS


AIR FILTER


AIR INTAKE LEAK

[/TABLE]



[TABLE="align: center"]

[h=3]Possible Causes[/h]


TURBOCHARGER, EGR OR INTAKE AIR SYSTEM RELATED DTCS


AIR FILTER


AIR INTAKE LEAK

[/TABLE]

 

[CDenton]

Thanks Bob