P0A09Wysoki
Przetwornica DC/DC wysokiego napięcia — usterka
Układ napędowy
Sprawdź szczegóły →P0AFB
Średni14V Power Module — Voltage High
OBD-II (EN): Hybrid Battery System Voltage Range/Performance
Code P0AFB signals excessively high voltage in the 14V circuit (>15V). It can damage onboard electronics and blow bulbs. DC/DC converter diagnosis is required.
Symptoms
Blown bulbs, accelerated electronics wear, voltage >15V on 12V battery
Possible causes
Faulty DC/DC converter (overvoltage output), voltage regulation error, faulty voltage sensor
Affected systems
Napęd EV/HEVPrzetwornica DC/DCInstalacja 12V
Related codes
P0AFAŚredni
Moduł zasilania 14V — napięcie niskie
Układ napędowy
Sprawdź szczegóły →Suggested Hybspec services
Based on the systems affected by this code, we will most likely start with:
Tags and synonyms
Does code P0AFB 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.