P101 - Max Delta Airflow

[03EBZ06]

What causes this error? I'm hoping one of you assembly guys can point this one out. IE, how is it derived?
We are tuning a 2004 car that has a blower and about 5600rpm, it suddently goes rich and throws this error.

Any ideas??

[Chris@HPTuners]

The PCM constantly compares the MAF airflow with that of the VE table calculated number. This is to sanity check the MAF operation. For blown cars this causes a problem cos the VE table only runs to 105Kpa.

P0101 is caused by the airflow thru the MAF not being within the tolerance set out by the table.

To fix this you can increase the Maximum Delta Airflow - P0101 Error table so that the airlfow delta between what the MAF is reporting and the VE table is calulating can be larger and hence P0101 will not be set.

[03EBZ06]

Is this table in the software somewhere?

[horist]

Is this table in the software somewhere?

on the General tab of the Engine Diagnostics section
"Maximum Delta Air Flow - P0101 Error"

[03EBZ06]

THANKS!

[Hooper]

I am getting the P0101 code a lot ever since I installed the bigger SLP MAF sensor. I increased the stock table mentioned above by 10% across the board. Is this too much, too little? Any help would be greatly appreciated.

[arthansen]

I raised mine 50% and no problems. 10% will be fine (if it is enough).

[Hooper]

I raised mine 50% and no problems. 10% will be fine (if it is enough).

Cool. Thanks. If it does come back on I have plenty of room to raise it..