P2C6BDrive Motor A Phase X 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
- P2C6B flags an overcurrent in phase X of drive motor A. X, Y and Z name the second three-phase winding set of a dual-winding machine, which a Mitsubishi Electric patent shows with its own inverter bridge and a current sensor per phase. No carmaker documents P2C6B publicly. Ford's 2019 hybrid summary gives the logic for the U/V/W counterparts (P0A5F, P0A62, P0A65): the motor control unit declares overcurrent above 600 A for 400 microseconds, or above 30 A for 200 ms right after power-up, when hardly any current should flow. Real causes are a short between windings or to the housing, or a power switch that stays conducting; a sensor reading too high fakes the fault. The inverter cuts drive to protect itself. P2C6A is the low side, P2C6E and P2C71 the high faults of Y and Z.
- What you may notice
- Hybrid or drive system warning with MIL on
- Sudden loss of electric drive, vehicle may not become ready
- Isolation fault codes stored at the same time if the winding touches the housing
- Likely causes
- PossibleTurn-to-turn or ground short in the phase X winding of drive motor A
- PossibleIGBT/MOSFET of the X leg in the inverter shorted or failing to turn off
- PossiblePhase X current sensor reading too high (gain or offset drift)
- RareChafed or wet phase X lead touching another phase or the housing
- 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.