Chassis, generic

C062F Active Air Dam Supply Voltage Circuit High

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

C062F is the overvoltage side: the supply at the air dam actuator or its module lies above the permitted window. Ford's patent powers the screw-jack actuators from the vehicle battery, so a regulator fault in the charging system, jump-starting with a higher voltage or a load dump spike can push the feed too high. Driver electronics guard against this: Melexis' MLX81350 LIN motor driver, offered for flaps and grille shutters, trips at about 22, 24 or 40 V depending on setting, and TI's DRV8873-Q1 is rated for at most 38 V. A GM air dam patent checks position, current and back-EMF but takes the supply as given, so the supply code stands apart. No maker publishes C062F. The actuator usually stops until the voltage drops.

Likely causes

Charging system overvoltage from a faulty regulator
Jump start or battery charger with excessive voltage
Faulty voltage measurement inside the actuator electronics

Symptoms

  • Air dam stops moving, often together with other overvoltage codes
  • Air dam fault message in the cluster
  • Flickering lights or charging warning if the regulator is at fault

Repair estimate

DifficultyMediumDIY possible
Parts and labour€0–600
Time0.3–2 h

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

Parts involved

active air dam actuatoralternator

Related codes

C062EC0601C0603U0645

References: patents.google.com, melexis.com, ti.com, patents.google.com.