Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Subaru >> 1997 >> Legacy Outback, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Circuit Tests >> DTC P0103 (QA_Hi): Mass Airflow (MAF) Sensor Circuit High Input

DTC P0103 (QA_Hi): Mass Airflow (MAF) Sensor Circuit High Input

  1. Turn ignition off. Connect SSM. Start engine. Set SSM to function mode F06 to display mass air flow and voltage signal values from MAF sensor. If values are between 1.3 g/sec and 250 g/sec or .3-5.0 volts, system is normal. Check for poor connections or intermittent open circuits. If values are not in specifications, go to next step.
  2. Turn ignition and SSM off. Disconnect MAF sensor. Turn ignition and SSM on. Set SSM to function mode F06 to display mass air flow and voltage signal value from MAF sensor. If values are more than 250 g/sec or 5.0 volts, repair short to power. If values are less than 250 g/sec or 5.0 volts, replace MAF sensor.
scientia non olet · About Mike's Workshop Manuals