P0301Wysoki
Wypadanie zapłonów — cylinder 1
Układ napędowy
Sprawdź szczegóły →P1520
WysokiCode P1520 indicates a fault in the Intake Manifold Runner Control (IMRC) circuit. This is a manufacturer-specific error, most common in Ford, Lincoln, Mazda and Mercury vehicles.
Code P1520 indicates a fault in the intake manifold runner control (IMRC) circuit. It can cause power loss, rough running on a cold engine, and the Check Engine light. The cause is most often a faulty actuator or broken wiring – workshop diagnosis is recommended.
Symptoms
Rough engine operation, especially when cold; power loss; hesitation during acceleration; Check Engine light on; possible entry into limp mode.
Possible causes
Faulty IMRC actuator (intake manifold runners) Broken, shorted, or corroded wiring to the actuator Faulty IMRC position sensor Corrosion or damage to electrical connectors Rarely: faulty PCM/ECU module
Affected systems
układ dolotowySilnik spalinowysterowanie silnikiem (PCM)
Related codes
Code P1520 appears in these brands
Go to messages and symptoms for your brand — there we analyze this code together with other typical alerts.
Does code P1520 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.