DTC DETECTION LOGIC

DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0101
Mass air flow sensor (bank 1) circuit range/performance
A)
A high voltage from the sensor is sent to ECM under light load driving condition.
  • Harness or connectors
    (The sensor circuit is open or shorted.)
  • Mass air flow sensor
  • EVAP control system pressure sensor
B)
A low voltage from the sensor is sent to ECM under heavy load driving condition.
  • Harness or connectors
    (The sensor circuit is open or shorted.)
  • Intake air leaks
  • Mass air flow sensor
  • EVAP control system pressure sensor
  • Intake air temperature sensor
P010B
Mass air flow sensor (bank 2) circuit range/performance
A)
A high voltage from the sensor is sent to ECM under light load driving condition.
  • Harness or connectors
    (The sensor circuit is open or shorted.)
  • Mass air flow sensor
  • EVAP control system pressure sensor
B)
A low voltage from the sensor is sent to ECM under heavy load driving condition.
  • Harness or connectors
    (The sensor circuit is open or shorted.)
  • Intake air leaks
  • Mass air flow sensor
  • EVAP control system pressure sensor
  • Intake air temperature sensor

 
 DTC CONFIRMATION PROCEDURE

 
 1.PRECONDITIONING
 
 2.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A
 
 3.CHECK MASS AIR FLOW SENSOR FUNCTION
 
 4.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B
 
 5.PERFORM COMPONENT FUNCTION CHECK FOR MALFUNCTION B