Test Description

WARNING: This page is about a different car, the 1995 Oldsmobile Ninety-Eight and 1995 Buick Park Avenue. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Test numbers refer to numbers on diagnostic chart.

Checks to see if PCM recognizes a problem.
Voltage reading at sensor harness terminal "A" of less than 4 volts or greater than 6 volts indicates a fault in Mass Airflow (MAF) sensor circuit, or poor connection.
Verifies both ignition feed voltage and a good ground circuit are available.

Fig 1: Code P0101 Schematic (3.8L) Mass Air Flow (MAF) Sensor Circuit

Fig 2: Code P0101 Flow Chart (3.8L) Mass Air Flow (MAF) Sensor Circuit