DTC P06B8; NVRAM Malfunction: 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	NVRAM malfunction
DETECTION CONDITION	Under the following condition, TCM internal NVRAM data retention/read/write disabled: Battery voltage is 8 V or more.
FAIL-SAFE FUNCTION	Not applicable
POSSIBLE CAUSE	TCM initial learning error Control valve body malfunction TCM internal NVRAM malfunction
SYSTEM WIRING DIAGRAM	Not applicable