P3409

Cylinder 2 Deactivation/Intake Valve Control Circuit/Open

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

Check Engine Light Is On
Increased fuel consumption
Loss of engine power
Unstable idling
Engine misfires

Causes

Open or short circuit in wiring harness
Valve control solenoid malfunction
Problems with the engine control unit (ECU)
Bad contacts in connectors
Mechanical damage to components of the cylinder deactivation system

How to Fix

Check the integrity of the wiring harness to cylinder 2
Test control solenoid resistance
Check connections and connectors for corrosion or damage
Scan the control unit for additional fault codes
Replace damaged components if necessary

Related codes

P3410 P3400 P3408