P0A72Generator Phase V Current
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P0A72 reports a fault in the phase V current of the hybrid generator. Toyota uses it: a field report filed with NHTSA covers a 2006 Highlander Hybrid with the MIL on and P0A72 stored together with P0A75 for generator phase W, P0A60 and P0A63 for drive motor A, and inverter performance codes including P0A78; after checking connector fit and the resistance of the three-phase cables, the inverter/converter assembly was replaced. The pairing of V and W codes fits inverters that measure two phases and calculate the third, as a Hyundai patent describes for its starter-generator. P0A73 and P0A74 are the low and high cases, P0A6F and P0A75 phases U and W. Expect a hybrid warning and possibly no drive.
- What you may notice
- MIL and master warning, several hybrid codes at once
- Vehicle may not move or enter ready mode
- Likely causes
- LikelyInternal fault in the inverter/converter assembly (Toyota Highlander Hybrid)
- PossibleGenerator phase V current sensor failed
- RarePoor pin fit or damaged three-phase cable to the generator
- 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 – €6,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.