Chassis, generic

C0630 Active Air Dam Stuck

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

C0630 says the air dam panel itself does not move although the actuator is driven and reports sensible values. GM's patent defines exactly this case: if measured position and motor current agree with each other but both differ from the commanded position, or back-EMF shows unusual load, the panel is at fault rather than sensor or drive. Ford's patent lowers the panel above 45 mph for 15 s or above 55 mph and raises it for 4WD, towing or high temperatures, so a stuck panel stays in the wrong place. Field causes are documented around C0604: broken actuator-to-dam bolts on 2021–2025 F-150s (SSM 54705) and impact damage on Ram trucks. No maker publishes C0630; GM's PIP5094 and PIT5307G list the number with an older meaning.

Likely causes

Panel bent or jammed after ground contact, debris or a kerb
Broken bolts between actuator and panel
Ice, snow or packed mud blocking the guides
Worn or seized screw jack in the actuator

Symptoms

  • Air dam hangs down or does not deploy
  • Air dam fault message in the cluster
  • Scraping on ramps or slightly higher fuel use on the highway

Repair estimate

DifficultyMediumDIY possible
Parts and labour€10–900
Time0.3–2.5 h

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

Parts involved

active air damactive air dam actuator

Related codes

C0604C0601C062EC062FU0645

References: patents.google.com, patents.google.com, static.nhtsa.gov, static.nhtsa.gov.