Conditions for Setting the DTC
WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
P0101
The engine control module (ECM) detects that the difference between the measured MAF and the MAP performance test 2 is greater than 25 g/s for greater than 0.5 second.
P1101
The engine control module (ECM) detects that the actual measured airflow from the MAF, the MAP, and the TP sensors is not within range of the calculated airflow that is derived from the system of models for more than 0.5 second.