Circuit Description
WARNING: This page is about a different variant/trim than selected.
The powertrain control module (PCM) uses the following information to calculate an expected airflow rate:
- The throttle position (TP)
- The barometric pressure (BARO)
- The manifold absolute pressure (MAP)
- The intake air temperature (IAT)
- The mass air flow (MAF)
- The engine RPM
If the PCM detects the airflow rate is more than expected, DTC P0068 sets.