OBD-II code · Powertrain (generic, extended)
P2AD4 Intermediate System Voltage Low
The intermediate (DC-link) system voltage in the hybrid power electronics is below the expected window. Common in HEV/EV inverter circuits when the DC bus drops under load.
Is it safe to drive with P2AD4?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyHV battery output low under load
- PossibleDC-link capacitor aged - increased ESR
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 3–12 h
- Emissions test
- Usually unaffected
- Parts involved
- Dc Link Capacitor, Hv Battery, Inverter
Related codes
- P2AD1Throttle/Pedal Position Sensor/Switch C/G Voltage Correlation
- P2AD2Throttle/Pedal Position Sensor/Switch B/G Voltage Correlation
- P2AD3Throttle/Pedal Position Sensor/Switch A/G Voltage Correlation
- P2AD5Intermediate System Voltage High
- P2AD6Reductant Pump Motor Position Sensor Circuit
- P2AD7Reductant Pump Motor Position Sensor Range/Performance
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.