Circuit Description
WARNING: This page is about a different variant/trim than selected.
The Mass Airflow (MAF) sensor measures the amount of air entering the engine during a given time. PCM uses MAF sensor information to monitor EGR flow rates. A large quantity of air entering the engine indicates an acceleration, high load situation or no EGR flow, while a small quantity of air entering the engine indicates deceleration, idle or full EGR operation.
MAF sensor produces a frequency signal. DTC P0101 will be set if the signal from the MAF sensor does not match a predicted value based on engine coolant temperature, throttle angle and engine speed. DTC will also set when the following conditions are present:
- Engine is running.
- Engine speed is 506-806 RPM.
- Throttle angle is zero degrees.
- The listed conditions are met for greater than 3 seconds.
- The change in MAF sensor is less than a calculated value.