FixVault
Home
›
Mazda
›
2021
›
CX-9 Signature
›
Repair and Diagnosis
›
Engine Performance
›
System
›
On-Board Diagnostic - Engine Control System (4 Of 6)
›
DTC P064D-00: Internal Control Module A/F Sensor Processor Performance Problem
›
Function Explanation (DTC Detection Outline)
Function Explanation (DTC Detection Outline)
If there is communication error between the A/F signal control driver and the CPU, the PCM stores a DTC.