P0A6EDrive Motor B 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
- P0A6E indicates excessive current, measured or real, in phase W of drive motor B. No manufacturer documents P0A6E publicly. On the motor A side, Hyundai's 2017 Ioniq Hybrid campaign shows the typical real-world pattern: coolant leaking inside the traction motor set phase-high codes for U, V and W alongside a high-voltage isolation fault, with motor replacement once the leak is confirmed. A Toyota patent describes the protective logic: if current runs far above the command, the inverter is at risk, so the system stops switching and opens the relays. CARB requires monitoring of electric drive components. P0A6D is the low side, P0A68 and P0A6B the U and V phases, P0A65 motor A. Drive from motor B is lost until repair.
- What you may notice
- MIL and hybrid warning, possibly with an isolation fault
- Motor B no longer drives; possible air conditioning shutdown
- Likely causes
- LikelyInsulation breakdown or winding short in phase W (moisture, coolant)
- PossibleShorted switch in the phase W leg of the inverter
- RarePhase W current sensor reading too high
- 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: €400 – €7,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.