LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mazda >> 2021 >> 3 Select, 4D Hatchback, AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> On-Board Diagnostic - Engine Control System (VINS 7, L, M) (2 Of 4) >> DTC P064D-00: Internal Control Module A/F Sensor Processor Performance Problem >> Troubleshooting Diagnostic Procedure >> Intention of troubleshooting procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Intention of troubleshooting procedure

TROUBLESHOOTING 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 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 CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW (US) .)
If the CAN communication is normal, replace the PCM and perform the repair completion verification.
(See PCM REMOVAL/INSTALLATION [(VIN M) (US)] .)
(See PCM REMOVAL/INSTALLATION [(VIN 7 & VIN L) (US)] .)
No Go to the next step.
Repair completion verification PURPOSE: VERIFY IF OTHER DTCs DISPLAYED
  • Perform the DTC inspection. (See DTC INSPECTION .)
  • Are any other DTCs displayed?
 Yes Repair the malfunctioning location according to the applicable DTC troubleshooting.
No DTC troubleshooting completed.
scientia non olet · About LEMON Manuals