P0507Średni
Bieg jałowy — obroty powyżej normy
Układ napędowy
Sprawdź szczegóły →P1505
WysokiFault code P1505 means Idle Speed Control Actuator Signal Low in VAG group vehicles (Audi, Volkswagen, Seat, Skoda).
Code P1505 indicates a problem with the idle control system, typically in VAG cars. It may manifest as unstable idle, engine stalling, or the check engine light coming on. To avoid further damage, we recommend workshop diagnosis, as the cause could be a dirty valve or faulty electronics.
Symptoms
Check engine light on; unstable idle speed (hunting); engine stalling at idle; jerking when pulling away; increased fuel consumption; lack of response to the accelerator pedal in extreme cases.
Possible causes
Faulty idle air control (IAC) valve; Dirty or coked throttle body; Broken or corroded wires in the IAC actuator circuit; Faulty engine control unit (ECU/ECM) – rare cases; Intake system leaks (e.g., vacuum hoses).
Affected systems
Układ sterowania biegiem jałowymSilnik spalinowyElektronika sterująca
Related codes
P0505Średni
System regulacji biegu jałowego (IAC) — usterka
Układ napędowy
Sprawdź szczegóły →Code P1505 appears in these brands
Go to messages and symptoms for your brand — there we analyze this code together with other typical alerts.
Does code P1505 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.