P0A41Drive Motor A Position Sensor Circuit Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P0A41 reports that a resolver signal of motor A sits below its permitted range, as happens with a sine, cosine or excitation wire shorted to ground, a shorted coil or a broken line pulled down by the input circuit. Kia documents it on the 2011-13 Optima Hybrid: an intermittent MIL or hybrid service lamp with P0A41 in the motor control unit, traced to internal shorts or poor pin fit in the sub-harness between the hybrid power control unit and the motor, checked against resistance specs. Bosch patents describe telling a short to ground from a short to supply by the offset of the coil lines. P0A42 is the high side, P0A3F the general loss of signal, P0A40 a degraded signal. Expect a warning lamp and possibly no electric drive.
- What you may notice
- Intermittent MIL or hybrid service lamp
- Electric drive temporarily disabled
- Code returns after clearing, often with vibration or heat
- Likely causes
- LikelyInternal short in the resolver sub-harness between power control unit and motor (Kia Optima Hybrid)
- LikelyPoor pin fit at the resolver connectors
- RareShorted resolver coil inside the motor
- RareFaulty resolver input stage in the motor control unit
- 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: €150 – €3,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.