By the AutoDTCs Editorial Team·Researched against SAEJ2012 & factory service data — how we research this
OBD-II Diagnostic Trouble Code
U3003
Battery voltage, General electrical faults, Circuit voltage below threshold
U
Network
modules / CAN bus
modules / CAN bus
3
Mfr
manufacturer code
manufacturer code
0
Network subsystem
03
Battery voltage, General electrical faults, Circuit voltage below threshold
Severity · general guide
Moderate
Module communication fault
Code type
Generic
System
Network
Standard
ISO/SAE Reserved
Fault type
Circuit