Hybspec

P0A9C

Wysoki

Hybrid Regeneration System Overheating

OBD-II (EN): Hybrid Assist Battery Overheating

Code P0A9C indicates overheating of the regenerative braking system. The vehicle limits energy recovery, increasing braking distance. Check the inverter and electric motor cooling system.

Symptoms

Limited regenerative braking, longer braking distance, dashboard warning

Possible causes

Intense regenerative braking (long descent), inverter cooling failure, electric motor/generator overheating, temperature sensor fault

Affected systems

Napęd EV/HEVInwerterbraking

Related codes

Does code P0A9C 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.