P0A70
Generator Phase U Current Low
What it means
P0A70 means Generator Phase U Current Low.
Check these first
- A high voltage battery that is degraded
- A generator that is failing
- Wiring or connector problems between the battery, motor, and generator
- A control module fault
What to do next
- Read generator phase U current on a scan tool
- Inspect the high voltage battery and generator
- Check the wiring and connectors between the battery, motor, and generator
- Test the control module output
- Replace the generator if phase U output stays low
- Clear the code and retest
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Updated
Generic SAE J2012 definition. Last updated 2026-10-10.