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Home >> Mazda >> 2024 >> CX-90 Turbo Select >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> On-Board Diagnostic - Pcm (VIN C & VIN D) (4 Of 5) >> DTC P064D-00: Internal Control Module A/F Sensor Processor Performance Problem >> Troubleshooting Diagnostic Procedure

Troubleshooting Diagnostic Procedure

P064D: 00 (PCM (H3T)) DIAGNOSTIC PROCEDURE

Step Inspection Results Action
1 PURPOSE: PERFORM DTC INSPECTION AND VERIFY IF MALFUNCTIONING PART IS PCM 
  • Clear the DTC recorded in the memory. (See CLEARING DTC .)
  • Replicate the vehicle conditions at the time the DTC was detected using the following procedure.
  • Perform the KOER self test. (See DTC INSPECTION .)
  • Perform the DTC inspection for the PCM. (See DTC INSPECTION .)
  • Is the same Pending DTC present?
Yes Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See MALFUNCTION DIAGNOSIS FLOW [CONTROLLER AREA NETWORK (CAN)] .)
If the CAN communication is normal, replace the PCM and perform the repair completion verification 1.
(Refer to [PCM REMOVAL/INSTALLATION ] in service information).
No Go to the next step.
Repair completion verification 1 PURPOSE: VERIFY IF OTHER DTCs DISPLAYED 
  • Perform the DTC inspection. (See DTC INSPECTION .)
  • Are any other DTCs displayed?
Yes Repair or replace the malfunctioning location according to the applicable DTC troubleshooting.
No DTC troubleshooting completed.