Powertrain, shared range

P3480 Cylinder 10 Exhaust Valve Control Circuit High

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modeNo

If the control line of the cylinder 10 exhaust valve actuator is held near supply voltage, the engine computer stores P3480. No manufacturer documents this code publicly; J2012 reserves the codes for cylinders 9 to 12 for engines with more than eight cylinders. A ten-cylinder engine has no cylinder 11 or 12, so P3480 is the last exhaust-valve code a V10 could ever use; the R8 V10 still does without it because its shut-off works through injection and ignition. Sorting out a high circuit means looking for a wire chafed against a feed, a backprobe left in a connector, or a coil with shorted windings. P3477 (open) and P3479 (low) are the other electrical faults of this actuator, P3476 the intake equivalent on cylinder 10.

Likely causes

Exhaust actuator wire of cylinder 10 shorted to a feed
Shorted windings in the exhaust actuator coil
Engine control module output defective

Symptoms

  • Check engine lamp on
  • Cylinder shut-off disabled

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

P3477P3478P3479P3476P3497

References: law.cornell.edu, audi-mediacenter.com, patents.google.com.