Powertrain
generic / SAE
P0A40
Drive Motor A Position Sensor Circuit
Electrical fault on the resolver or encoder used to determine rotor position of drive motor A. Position is essential for vector control commutation.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / numberA / 40
Possible causes
- Resolver failed high
- Resolver wiring shielding fault medium
Symptoms
- EV/hybrid system warning light on
- Reduced motor power or torque
- Possible limp mode or vehicle shutdown
Inspection / repair
- Difficulty: shop only
- DIY: shop recommended
- Estimated cost: 800–4500 €
- Estimated time: 3–12 h
- Component: drive motor a
- Component: rotor position sensor
- Component: resolver
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012