Powertrain, shared range

P3484 Cylinder 11 Deactivation/Intake Valve Control Circuit High

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modeNo

P3484 signals that the control circuit of the cylinder 11 deactivation or intake valve actuator is too high, for example because its wire is shorted to a battery feed and the module detects it when switching the output on. No manufacturer documents this code publicly; J2012 reserves the codes for cylinders 9 to 12 for engines with more than eight cylinders. Twelve-cylinder engines that shut down cylinders, notably the Bentley W12 in Bentayga and Continental GT and the Lamborghini Aventador V12, describe their systems as switching off a whole bank, with Bentley stating that the valves keep moving. P3484 thus fits only a design with a dedicated valve actuator at cylinder 11. The control module will normally cancel deactivation and run on all cylinders. P3481 and P3483 are the remaining electrical faults.

Likely causes

Cylinder 11 control wire touching battery voltage
Cylinder 11 actuator coil with shorted turns
Control module driver damaged

Symptoms

  • Check engine lamp on
  • Reduced-cylinder mode cancelled

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

P3481P3482P3483P3488P3497

References: law.cornell.edu, bentleymedia.com, newatlas.com, mobilityengineeringtech.com.