P0A65Drive Motor A Phase W Current High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P0A65 reports overcurrent in phase W of drive motor A. It is the third phase code in Hyundai bulletin 17-01-057-1 for the 2017 Ioniq Hybrid, campaign T2J: with an internal coolant leak in the traction motor, P0A65, P0A5F or P0A62 set with Check Engine and hybrid lights, often joined by the isolation fault P0AA6. Reduced power when accelerating and a non-working air conditioner followed. The fix path is the scan tool isolation test, a coolant inspection of the motor and, if confirmed, a new traction motor. In general, a W-phase winding short or a pinched cable has the same effect. Hyundai inverters measure two phases and calculate the third, per a Hyundai patent. P0A64 is the low side, P0A63 the general W code, P0A5F and P0A62 phases U and V.
- What you may notice
- Check Engine and hybrid warning lights
- Reduced power when accelerating
- Air conditioning inoperative (Hyundai Ioniq Hybrid)
- Likely causes
- LikelyInternal coolant leak in the traction motor (Hyundai Ioniq Hybrid)
- PossiblePhase W lead or winding shorted to ground or to another phase
- PossibleInverter power stage fault in phase W
- RareCurrent sensor falsely reporting overcurrent
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €500 – €7,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.