P3461: Cylinder 8 Exhaust Valve Control Circuit/Open

In the J2012 scheme, P3461 marks lost continuity to an exhaust-side actuator of its own on cylinder 8. No manufacturer documents this code publicly. In the published sources, cylinder 8 is deactivated only by GM's newer V8s (DFM on the L84 and L87, a fixed 2-3-5-8 pattern on the LTA and LT2), and per NHTSA those engines feed both lifters of a cylinder from one solenoid, leaving no separate exhaust wiring to test. A GM patent application likewise uses one shared hydraulic valve and only staggers the exhaust valves ahead of the intake valves; only a separate exhaust actuator would fall under CARB's continuity check for output components. P3462 to P3464 are the other cylinder 8 exhaust codes, P3457 the intake-side open.

Cylinder 8 is numbered according to the manufacturer: check your engine's manual before working on it.

Symptoms

• Check engine lamp on
• Cylinder deactivation no longer active

Most likely causes

• Wire or plug to the cylinder 8 exhaust actuator broken
• Exhaust actuator winding open
• Control module output defective

What to check, in order

Start with the simplest. You can tick off each step.

1. Check the oil level and condition before anything else
2. Check the continuity of the wire between the component and the control module.
3. Check the solenoid valve's connector
4. Compare commanded and actual angles in live data
5. Test the solenoid valve and its filter, if it has one
6. Check the engine timing if there is chain noise

Good to know

• Repair difficulty: medium
• It affects emissions.

What each character of P3461 means

• P: Powertrain: engine and transmission
• 3: Generic or manufacturer code, depending on the range
• 4: Emissions
• 61: Specific fault in that system

Frequently asked questions

Can I keep driving with code P3461?

Drive little and gently. If you hear timing chain noise or the oil light comes on, shut off the engine.

What causes code P3461?

The most common causes are: wire or plug to the cylinder 8 exhaust actuator broken; exhaust actuator winding open; control module output defective.

Related codes

• P3462Cylinder 8 Exhaust Valve Control Performance
• P3463Cylinder 8 Exhaust Valve Control Circuit Low
• P3464Cylinder 8 Exhaust Valve Control Circuit High
• P3457Cylinder 8 Deactivation/Intake Valve Control Circuit/Open
• P3497Cylinder Deactivation System Bank 2

Sources

• law.cornell.edu: 13 CCR 1968.2
• static.nhtsa.gov: INRD PE25001 11969
• static.nhtsa.gov: MC 10194084 9999
• patents.google.com: en

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.