Hybspec

P3450

Średni

Cylinder 7 – deactivation system / intake valve control not operating correctly. Problem with the electrical or mechanical circuit of the cylinder 7 intake valve.

OBD-II (EN): Cylinder 7 Intake Valve Control Circuit Malfunction

Code P3450 signals a problem with the cylinder 7 deactivation system – specifically with the intake valve or its control solenoid. The cause could be a faulty solenoid, low engine oil pressure, or a wiring fault. Due to the complexity of the cylinder deactivation system, diagnosis by a qualified mechanic with an OBD-II scanner is recommended.

Symptoms

Check Engine Light (MIL) illuminated Possible engine misfire Increased fuel consumption Reduced engine power and performance Engine may run rough or vibrate

Possible causes

Faulty cylinder 7 deactivation solenoid Low engine oil level or insufficient oil pressure Clogged oil passage supplying the deactivation valve Damaged, burnt, or corroded solenoid wiring/connectors Mechanically damaged or stuck intake valve Faulty engine control module (ECM/PCM)

Affected systems

cylinder deactivation systemintake valve controlengine oil pressure systemengine control module (ECM/PCM)variable displacement system (AFM/MDS)

Related codes

P3410Średni

Dezaktywacja cylindra 2 / wydajność obwodu sterującego zaworem dolotowym. Układ dezaktywacji cylindrów wykrył nieprawidłowe działanie zaworu dolotowego w cylindrze nr 2.

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Does code P3450 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.