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Home >> Mazda >> 2024 >> CX-90 Turbo Select >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (On-Board Diagnostic - Pcm (VIN A) (1 Of 4)) >> DTC P0133-00: A/F Sensor System: Slow Response (PYUL) >> Details On DTCs

Details On DTCs

WARNING: This page is about a different variant/trim than selected.
P0133-00 (PCM (PYUL)) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location A/F sensor system: Slow response
Detection condition Determination conditions
  • The response speed of the A/F sensor input signal when the air/fuel ratio is fluctuated is slow.
Preconditions
  • Engine speed: Within specified range
  • Engine coolant temperature: Specified value or more
  • Intake air amount: Within specified range
  • A/F sensor voltage: Within specified range
  • Time until fuel-cut in all cylinders is completed: Within specified time
  • i-stop control is not operating
  • Not during cylinder deactivation control (With cylinder deactivation)
  • The following DTCs are not detected:
    • A/F sensor heater: P0031-00 and P0032-00
    • ECT sensor: P0117-00 and P0118-00
    • BARO sensor: P2226-00, P2228-00 and P2229-00
    • MAP sensor: P0107-00 and P0108-00
    • MAF sensor: P0100-00, P0101-00 and U060F-00
    • Misfire: P0300-00, P0301-00, P0302-00, P0303-00 and P0304-00
    • Fuel injection correction: P0171-00 and P0172-00
Malfunction determination period
  • Not applicable
Drive cycle
  • 2
Self test type
  • CMDTC self test
Sensor used
  • A/F sensor
Fail-safe
  • Fixes duty value of A/F sensor heater.
  • Stops fuel feedback control of A/F sensor.
  • Inhibits engine-stop by i-stop control.
Vehicle status when DTCs are output
  • Not applicable
Possible cause
  • A/F sensor signal error
    • A/F sensor connector or terminal malfunction
    • A/F sensor incorrect installation
    • Exhaust gas leakage from exhaust system
  • A/F sensor deterioration
  • A/F sensor heater malfunction
  • PCM malfunction