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Home >> Mazda >> 2021 >> 3 Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> On-Board Diagnostic - Engine Control System (VINS 7, L, M) (2 Of 4) >> DTC P050A-00: Cold Start IAC System Performance Problem >> Details On DTCs

Details On DTCs

DTC P050A:00 (PCM, VINs 7, L, M) DETECTION CONDITION AND POSSIBLE CAUSE

Description Cold start IAC system performance problem
Detection condition Determination conditions
  • The difference between the actual engine speed and the target engine speed is 100 rpm or more.
Preconditions
  • Engine speed: 500 rpm or more(1)
  • Engine coolant temperature: -10-45°C {14-113°F}(1)
  • Catalytic converter estimated temperature: 380°C {716°F} or less(1)
  • Vehicle speed: 0 km/h {0 mph}(1)
  • The following DTCs are not detected:
    • ECT sensor No. 1 malfunction: P0116:00, P0117:00 and P0118:00
    • MAP sensor malfunction: P0069:00, P0107:00 and P0108:00
    • BARO sensor malfunction: P2226:00, P2228:00 and P2229:00
      • Instrument cluster malfunction: P2610:00
Malfunction determination period
  • 9 s period
Drive cycle
  • 2
Self test type
  • CMDTC self test
Sensor used
  • CKP sensor
  • ECT sensor No. 1
Fail-safe function
  • Limits intake air amount
  • Stops high pressure fuel pump control
Vehicle status when DTCs are output
  • Not applicable
Possible cause
  • Air suction in intake air system
  • Drive-by-wire control system malfunction
  • Throttle valve malfunction
  • PCM malfunction
(1) Standard can be verified by displaying PIDs using M-MDS