Code Definition

P0A41 — Drive motor A position sensor signal low

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About P0A41

P0A41 is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P0A41 is stored, the module has detected a signal or supply voltage lower than the expected operating range; and a sensor-related fault — the reported value from the named sensor is out of spec.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P0A41 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

Drive Motor A uses a rotor position sensor, typically a resolver, to provide the inverter with rotor angle for precise motor control. The module monitors the level of the position signal, and DTC P0A41 sets when that signal voltage stays below the calibrated minimum threshold. A persistently low signal usually points to a short to ground on the signal circuit, a collapse of the feedback amplitude from lost excitation, or an open or high resistance that pulls the monitored level low, rather than a plausible rotor angle. With the level stuck low the inverter cannot detect rotor position correctl...

Join TaT to view the complete code information and diagnostic details.

Quick Facts