Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Mazda >> 2010 >> 3 Mazdaspeed, 2.3 3 >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic [Engine Control System L3 With TC] (4 Of 5) >> DTC P064D:00 >> Notes

DTC P064D:00: Notes

DTC P064D:00 (L3 WITH TC) DETECTION CONDITION & POSSIBLE CAUSES

DTC P064D:00 Internal control module A/F sensor processor performance problem
DETECTION CONDITION 
  • The A/F sensor IC integrated in the PCM converts to voltage value for fuel control and for diagnosis based on the A/F sensor signal current and sends to the CPU (integrated in the PCM). If there is a transmission format error from the A/F sensor IC to the PCM, the PCM will detect a transmission error.

MONITORING CONDITIONS 
  • Drive Mode 03 (EGR System, A/F sensor heater, HO2S heater, A/F sensor, HO2S, and TWC Repair Verification Drive Mode)
  • Following conditions are met:

  • Engine is running or ignition switch is ON
  • A/F sensor signal voltage: 1.2 V-battery voltage-1.2 V  (PCM terminals 2Z, 2AC, 2AD)

Diagnostic support note 
  • This is a continuous monitor (CCM).
  • The MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle.
  • FREEZE FRAME DATA (Mode 2)/Snapshot data is available.
  • The DTC is stored in the PCM memory.
POSSIBLE CAUSE 
  • PCM internal malfunction (between CPU and A/F sensor control IC communication line)
scientia non olet · About Mike's Workshop Manuals