Powertrain, shared range

P3476 Cylinder 10 Deactivation/Intake Valve Control Circuit High

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modeNo

P3476 is logged when the control circuit of the cylinder 10 deactivation or intake valve actuator sits at too high a level, usually a short to a battery-fed wire found while the output is active. No manufacturer documents this code publicly; J2012 reserves the codes for cylinders 9 to 12 for engines with more than eight cylinders. On the V10s that offer shut-off, Audi describes the bank being stopped by cutting fuel injection and ignition in the upper gears, so cylinder 10 has no valve actuator there. A twelve-cylinder engine with valve switching, such as Mercedes' M137 with its oil-pressure solenoid pack, is the kind of design this code was written for. The control module then usually blocks deactivation for the rest of the trip. Electrical siblings: P3473 and P3475.

Likely causes

Cylinder 10 control wire shorted to a supply
Cylinder 10 actuator coil with shorted turns
Control module output stage defective

Symptoms

  • Check engine lamp on
  • Cylinder deactivation locked out for the drive

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

P3473P3474P3475P3480P3497

References: law.cornell.edu, audi-mediacenter.com, en.wikipedia.org, gsi.ext.gm.com.