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P3410 — Cylinder 2 Deactivationintake Valve Control Circuit Performance

Manufacturer-specificPowertrain (engine & transmission)

The powertrain control module (PCM) has detected a performance issue with the intake valve control circuit for cylinder 2’s deactivation system. This typically involves the oil control solenoid that manages hydraulic pressure to the variable valve lifter, preventing the cylinder from properly entering or exiting deactivation mode.

Symptoms

What causes it — most likely first

1. Faulty intake valve oil control solenoid

The electro-hydraulic solenoid that directs oil pressure to the cylinder 2 intake lifter has failed mechanically or electrically, preventing proper circuit resistance or response time.

2. Wiring or connector fault

Open circuits, short circuits, or high resistance in the harness between the PCM and the cylinder 2 solenoid due to corrosion, chafing, or pin damage.

3. Incorrect oil viscosity or low pressure

Engine oil that is too thick, contaminated, or low level prevents proper solenoid operation and lifter response, causing the circuit to perform outside expected parameters.

4. Mechanical lifter failure

The cylinder deactivation lifter is stuck, collapsed, or internally leaking hydraulic pressure, causing the control circuit to detect abnormal electrical load or response.

5. PCM driver circuit malfunction

Rare internal failure of the PCM's output driver for this specific solenoid circuit, usually only occurring after external electrical faults have damaged the driver.

How it's diagnosed

  1. Inspect the wiring harness and connector at the cylinder 2 intake valve solenoid for corrosion, damage, or loose pins.
  2. Measure the solenoid's coil resistance and compare to specifications; test solenoid activation with a scan tool or manual power/ground.
  3. Verify engine oil level and condition; check that oil viscosity matches manufacturer specifications.
  4. Perform an oil pressure test to confirm adequate pressure at operating temperature.
  5. Command the cylinder 2 deactivation solenoid on/off with a scan tool while monitoring current draw and listening for mechanical operation.
  6. If mechanical and electrical tests pass, verify PCM output signal and ground circuit integrity before considering module replacement.

Code facts & related codes

SystemPowertrain (engine & transmission)
StandardizationManufacturer-specific (P1/B1/C1/U1)
Related codesP3408 — Cylinder 1 Exhaust Valve Control CircuP3409 — Cylinder 2 Deactivationintake Valve CoP3411 — Cylinder 2 Deactivationintake Valve CoP3412 — Cylinder 2 Deactivationintake Valve CoP3413 — Cylinder 2 Exhaust Valve Control CircuP3414 — Cylinder 2 Exhaust Valve Control Circu

Frequently asked

Can I drive with this code?

Yes, but fuel economy will suffer as the system disables cylinder deactivation to protect the engine. Extended driving may cause increased valve train wear if oil pressure issues exist.

Why is oil viscosity important for this code?

The deactivation system relies on precise oil pressure to actuate hydraulic lifters. Oil that is too thick or contaminated cannot flow through the small solenoid passages quickly enough, causing performance errors.

Do I need to replace the PCM for this code?

Almost never. The PCM is rarely the root cause; technicians should verify solenoid operation, wiring integrity, and oil pressure before considering module replacement. PCM faults typically only occur after solenoid short-circuits damage the driver.

Will this cause engine damage?

Not immediately, but if caused by low oil pressure or sludge, continued operation may damage valve train components. If the lifter is stuck in the deactivated position, that cylinder will not fire, causing raw fuel to enter the catalytic converter.