P0A5D Drive Motor B Stator Temperature Sensor Circuit

P0A5D indicates a Drive Motor B stator temperature sensor circuit problem. The controller cannot trust stator temperature data used to protect Motor B.

Code status

Needs verification

Not yet verified against SAE J2012_202509 / J2012DA. Treat unverified rows as a lookup aid, not repair authority.

System: Hybrid / EV
Scope: iso-sae-controlled-p0
Standard: SAE J2012 / ISO 15031-6
Source: legacy-import

Diagnostic boundary

A diagnostic trouble code reports that a monitored test failed. It does not prove one specific part is bad, and manufacturer logic can add vehicle-specific conditions.

Do not continue high-load operation if Motor B stator temperature data is invalid or overheating is possible.

Useful checks before replacing parts

Compare Motor B stator temperature with inverter temperature, coolant temperature, motor load, freeze-frame data, and related hybrid cooling codes.
Inspect stator temperature sensor wiring, connector condition, sensor ground, reference voltage, motor connector sealing, coolant flow, and water intrusion.
Graph stator temperature from cold soak through loaded operation to confirm whether the signal changes smoothly and plausibly.

Related OBD-II codes

These nearby hybrid / ev entries can help compare wording and fault area. They may share the same verification status as the source database.