DTC P06B8; Pcm Internal Control Module Non-Volatile Ram Error: Notes

WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

DETECTION CONDITION & POSSIBLE CAUSE

DTC P06B8:00	Internal control module non-volatile RAM error
DETECTION CONDITION	PCM internal EEPROM malfunction. Diagnostic support note This is a continuous monitor (other). The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle. FREEZE FRAME DATA (Mode 2)/Snapshot data is available. DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	Not applicable
POSSIBLE CAUSE	PCM connector or terminals malfunction PCM internal EEPROM malfunction
SYSTEM WIRING DIAGRAM	Not applicable