FixVault

Test Description

WARNING: This page is about a different variant/trim than selected.
NOTE: Test numbers refer to numbers on diagnostic charts.
  1. Determines if fault is a hard failure or an intermittent condition.
  2. Checks for 5-volt reference from PCM.
  3. Verifies both ignition voltage and a good ground circuit are available.
Fig 1: Code 48 Schematic (Corvette) Mass Airflow Sensor
G95I14165
Fig 2: Code 48 Diagnostic Flow Chart (Corvette) Mass Airflow Sensor
G95E14203