P0A23 Drive Motor A Current Sensor Circuit High

P0A23 points to a high condition in the Drive Motor A current sensor circuit. The current sensor signal is above range or being backfed.

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 operate the vehicle with unreliable Motor A current feedback because torque control may be limited or disabled.

Useful checks before replacing parts

Review Motor A current signal voltage, sensor supply, ground, inverter status, torque command, freeze-frame data, and related high-input motor codes.
Inspect for short-to-voltage faults, open grounds, shielded cable damage, connector water intrusion, crossed wires, and inverter terminal damage.
Compare current readings at different operating states to determine whether the high signal is sensor, harness, inverter, or controller related.

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.