P0A46
PPowertrainDrive Motor B Position Sensor Range/Performance
What does this code mean?
Severity : HighP0A46 means the drive motor B position sensor signal is out of range or implausible. This sensor, often a resolver, tells the hybrid control module the rotor position so it can drive the electric motor precisely. With a doubtful signal, the system may limit or cut electric drive.
Symptoms
- Hybrid system or check engine light on.
- Reduced power or limp mode.
- Jerking or unusual noise under electric drive.
- Vehicle may not enter ready mode in some cases.
Possible causes
- Faulty motor B position sensor or resolver.
- Damaged sensor wiring or connector.
- Moisture ingress or corrosion.
- Internal inverter or hybrid control module fault.
Diagnosis and repair
- Read all hybrid system codes.
- Inspect the position sensor connector and wiring.
- Measure resolver windings against manufacturer values.
- Leave any high voltage work to a qualified technician.
- Repair or replace the faulty part, clear the code and road test.
Is this vehicle in your workshop?
Upload the ORI file: it is processed automatically in a few minutes, 24/7, and a calibration engineer takes over complex cases during opening hours.
Are you a driver?
Find a garage or a diagnostics and remapping specialist near you.
Find a pro on ChiptuneMAPCode details
Code
P0A46
Category
Powertrain
Prefix
P
Standard
OBD-II / SAE J2012