P0A22 Drive Motor A Current Sensor Circuit Low

P0A22 indicates a low condition in the Drive Motor A current sensor circuit. The sensor signal, supply, or feedback is below the expected range.

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 condemn Motor A or the inverter until low signal, supply, ground, and harness integrity are tested.

Useful checks before replacing parts

Check Motor A current sensor supply, signal voltage, ground, inverter input data, torque request, freeze-frame load, and related low-input codes.
Inspect for short-to-ground faults, low sensor supply, damaged shielded wiring, connector corrosion, water intrusion, and poor terminal tension.
Measure the sensor circuit at both sensor and controller connectors to separate sensor, harness, and module input faults.

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.