FixVault

On Board Diagnosis Logic: Notes

These self-diagnoses have the one trip detection logic  .

DTC DETECTING CONDITION CHART

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0102 0102 Mass air flow sensor circuit low input An excessively low voltage from the sensor is sent to ECM.
  • Harness or connectors (Mass air flow sensor circuit is open or shorted.)
  • Intake air leaks
  • Mass air flow sensor
P0103 0103 Mass air flow sensor circuit high input An excessively high voltage from the sensor is sent to ECM.
  • Harness or connectors (Mass air flow sensor circuit is open or shorted.)
  • Mass air flow sensor