P3293high severityPowertrain
HV Charging System Ground Fault Interrupt (GFI) Trip
on 2012 Toyota Highlander 3.3L V6 Hybrid · AWD
What this code means
The HV charging system ground fault interrupter has tripped during a charging session, indicating a potential current leak to ground.
Symptoms
- Charging session terminated immediately
- GFI fault displayed
- Unable to restart charging
- EVSE may also show fault
- Intermittent charge interruptions
Common causes
- Moisture in charge port or HV connector
- HV cable insulation degradation
- Onboard charger internal ground fault
- EVSE ground fault sensitivity
- Home wiring ground/neutral issue
Diagnostic steps
- Inspect charge port for moisture or debris
- Test HV system isolation resistance
- Try charging at different EVSE
- Check home electrical grounding
- Read OBC ground fault current data
Repair notes
Dry and clean charge port. Test HV isolation. If vehicle-side fault confirmed, inspect HV cable insulation and onboard charger. Have electrician verify home wiring if fault only occurs at home.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1