Faulty intake valve control solenoid or actuator on bank 2; Wiring damage such as an open circuit, short to ground, or corroded connector at the bank 2 valve control circuit; Sticking or clogged oil control valve screen restricting hydraulic flow to the actuator; Low engine oil level or degraded oil causing poor hydraulic response; Mechanical binding in the intake valve train or variable valve timing phaser on bank 2; Failed powertrain control module driver for the bank 2 intake valve control circuit (rare)

DTC codes / P34xx · Auxiliary emission controls / P341B

P341BDeactivation/Intake Valve Control Circuit Performance Bank 2

P341B indicates that the powertrain control module has detected a performance fault in the intake valve control circuit for bank 2, meaning the electrical or mechanical response of the valve actuator did not match the commanded state within the expected time or range. The computer monitors the circuit for opens, shorts, or sluggish actuator movement and sets this code when the actual valve behavior deviates from the desired profile.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaAuxiliary emission controls

Symptoms you may notice

Illumination of the check engine light, often with no other noticeable symptoms
Rough idle or misfire at idle due to incorrect valve timing on bank 2
Reduced engine power or poor acceleration, especially at low RPM
Decreased fuel economy because the engine cannot optimize intake airflow
Intermittent stalling or hesitation when coming to a stop
Audible ticking or unusual noise from the bank 2 valve cover area

Common causes, most likely first

Faulty intake valve control solenoid or actuator on bank 2
Wiring damage such as an open circuit, short to ground, or corroded connector at the bank 2 valve control circuit
Sticking or clogged oil control valve screen restricting hydraulic flow to the actuator
Low engine oil level or degraded oil causing poor hydraulic response
Mechanical binding in the intake valve train or variable valve timing phaser on bank 2
Failed powertrain control module driver for the bank 2 intake valve control circuit (rare)

How to diagnose and fix it

Verify engine oil level and condition, then change oil and filter if overdue or contaminated
Inspect the bank 2 intake valve control solenoid connector and wiring for corrosion, chafing, or loose pins
Measure resistance of the bank 2 intake valve control solenoid and compare to manufacturer specification
Command the valve actuator with a scan tool and observe circuit voltage or current feedback for proper response
Remove and clean the oil control valve screen or replace the solenoid if clogged or electrically out of spec
Check for mechanical binding in the bank 2 variable valve timing phaser or intake valve train
If all electrical and hydraulic checks pass, test the powertrain control module driver circuit and replace the module only as a last resort

Oil quality and circuit checks before parts

A dirty or restricted oil control valve screen is a frequent cause of this code that many technicians overlook while replacing the solenoid itself.
The code can set intermittently from a poor electrical connection that only acts up when the engine is hot or vibrating, so wiggle-test the harness while monitoring live data.
Low oil pressure or sludged oil can mimic a failed actuator, so always verify oil condition and pressure before condemning the valve control hardware.
Bank 2 intake valve control performance can be affected by a failing variable valve timing phaser that mechanically binds, even when the solenoid tests good.
This code does not always mean the actuator is dead; a stretched timing chain or mis-set cam timing on bank 2 can cause the same performance deviation.

Can I keep driving with P341B?

You can usually drive the vehicle to a repair shop, but avoid heavy acceleration and prolonged idling because incorrect bank 2 valve timing can cause misfires and increased exhaust emissions. If the engine runs rough, stalls, or loses significant power, stop driving and have it towed to prevent further damage.

Tools that help

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Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.