What are the common causes of P3498?

A failed cylinder 1 deactivation solenoid. A collapsed or stuck deactivation lifter. Low oil pressure or low oil level. An open or short in the solenoid circuit. Sludge or contaminated oil blocking the oil gallery.

Check engine oil level and oil pressure. Scan for other cylinder deactivation codes. Inspect the deactivation solenoid connector and wiring. Command the solenoid with a scan tool and confirm lifter movement. Replace the failed lifter or solenoid. Clear the code and retest.

P3498

Cylinder 1 Deactivation/Intake Valve Performance

System: Auxiliary emission controls (P code)
Lamp: Check Engine Light
Category: Powertrain - Auxiliary Emissions Controls

What it means

P3498 means Cylinder 1 Deactivation/Intake Valve Performance.

Where it lives

For P3498, the description names the valve as the part involved. The description of P3498 puts it on cylinder 1.

Check these first

A failed cylinder 1 deactivation solenoid
A collapsed or stuck deactivation lifter
Low oil pressure or low oil level
An open or short in the solenoid circuit
Sludge or contaminated oil blocking the oil gallery

What to do next

Check engine oil level and oil pressure
Scan for other cylinder deactivation codes
Inspect the deactivation solenoid connector and wiring
Command the solenoid with a scan tool and confirm lifter movement
Replace the failed lifter or solenoid
Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-08-30.