FixVault

DTC Detection Logic

DTC No. Trouble diagnosis name (Trouble diagnosis content) DTC detecting condition Possible cause
P0102 MAF SEN/CIRCUIT-B1
(Mass air flow sensor circuit low input)
An excessively low voltage from the sensor is sent to ECM.
  • Harness or connectors (The mass air flow sensor circuit is open or shorted.)
  • Intake air leakage
  • Mass air flow sensor
P0103 MAF SEN/CIRCUIT-B1
(Mass air flow sensor circuit high input)
An excessively high voltage from the sensor is sent to ECM.
  • Harness or connectors (The mass air flow sensor circuit is open or shorted.)
  • Mass air flow sensor