DTC P064D:00, P064E:00 [MZI-3.7]: Notes

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

DETECTION CONDITION & POSSIBLE CAUSE

DTC P064D:00 DTC P064E:00	Internal control module exhaust gas sensor processor performance (RH) Internal control module exhaust gas sensor processor performance (LH)
DETECTION CONDITION	DTC P064D:00 indicates that internal control module exhaust gas sensor processor performance (RH) DTC P064E:00 indicates that internal control module exhaust gas sensor processor performance (LH) The PCM monitors the application-specific integrated circuit that controls and monitors the A/F sensor and/or HO2S The test fails when the PCM detects an internal circuit or communication concern
POSSIBLE CAUSE	PCM malfunction Influence of aftermarket product performance