Powertrain, shared range

P3411 Cylinder 2 Deactivation/Intake Valve Control Circuit Low

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modeNo

P3411 means the control output for the cylinder 2 deactivation valve sees a short to ground. GM lists it for the L84 V8 (2019), whose Dynamic Fuel Management can switch off any cylinder: below 0.5 ohm to ground with the low-side driver off, 20 failures in 25 samples every 250 ms, at least 11 V on the powertrain relay and 425 rpm. It is a Type B fault, so the lamp lights after two trips in a row. GM notes that some controllers set P3409 together with it. On engines where cylinder 2 cannot be deactivated the code has no use. The fix is usually in the wiring or the solenoid in the engine valley; P3412 is the short to power.

Likely causes

Damaged insulation lets the control wire touch ground
Cylinder 2 solenoid shorted internally
Faulty engine control module driver

Symptoms

  • Check engine lamp after two trips
  • Dynamic Fuel Management inactive, engine stays on all cylinders

Repair estimate

DifficultyMediumDIY possible
Parts and labour€60–900
Time0.5–4 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

cylinder deactivation solenoidwiring harnessecm

Related codes

P3409P3410P3412P3415P3497

References: law.cornell.edu, gsi.ext.gm.com, static.nhtsa.gov.