VOLVO · 2025-05-15
When updating the Energy Storage Control Module (ESCM) software, the truck may display fault code P109D8A – Battery Management Units (BMU), Authentication Failure.
P109D · Manufacturer communications
A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
P109D ← What does this code mean?2 Results
MACK · 2025-05-15
Battery Electric Vehicle (BEV) - DTC P109D8A Following Energy Storage Control Module (ESCM) Software Update