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Home >> Mazda >> 2021 >> CX-9 Signature >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> On-Board Diagnostic - Engine Control System (4 Of 6) >> DTC P064D-00: Internal Control Module A/F Sensor Processor Performance Problem >> Repeatability Verification Procedure
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Repeatability Verification Procedure

  1. Warm up the engine to allow the engine coolant temperature to reach 80°C {176°F} or more.
  2. Start the engine and leave it idling for 1 min.
    NOTE:
    • Match the engine coolant temperature in the recorded FREEZE FRAME DATA/snapshot data, the vehicle speed, and engine speed values to the best extent possible while driving the vehicle.
  3. Try to reproduce the malfunction by driving the vehicle for 5 min based on the values in the FREEZE FRAME DATA/snapshot data.
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