Hybspec

P0A03

Średni

Electronics Cooling Temperature Sensor High Signal (Overheating)

OBD-II (EN): Electronic Control Unit Temperature Sensor High (Overheating)

Code P0A03 means a too high signal from the drive electronics cooling temperature sensor. It may indicate inverter overheating or cooling pump failure. Requires professional diagnosis.

Symptoms

Power limitation, forced economy mode, temperature warning on the dashboard

Possible causes

Inverter overheating, electronics cooling pump failure, clogged cooling circuit radiator, faulty sensor (signal shorted to power)

Affected systems

Napęd EV/HEVInwerterChłodzenie baterii

Related codes

Does code P0A03 require professional diagnostics?

The code alone is not enough. To find the cause, you need to read live data, check freeze frame conditions, and compare with vehicle behavior. Book a diagnostic session.