Fault Family System: Chassis (C-Codes) 7 SAE Codes

Active Air Dam Actuator Circuit

Diagnostic & Technical Explanation

Code C0601 (Active Air Dam Control Circuit/Open) sets when the module cannot drive the active air dam (front air curtain/spoiler) actuator motor to its commanded raised or lowered position for aerodynamic efficiency, or the actuator's supply voltage circuit reads outside range, or the actuator is mechanically stuck. Because this component is mounted low at the front of the vehicle, the most common causes are road debris or ice jamming the mechanism, a corroded connector from road spray exposure, or a worn actuator motor. A stuck air dam can also drag on speed bumps or steep driveways, so a visual inspection for physical obstruction should come before any electrical diagnosis.

These 7 diagnostic trouble codes share one detection mechanism and one repair path, which is why MechanicDB groups them into a single authored fault family rather than repeating the same explanation 7 times.

Codes in this family (7)

Code	Definition	Repair coverage
C0601	Active Air Dam Control Circuit/Open	4 ranked fixes
C0602	Active Air Dam Control Circuit Low	4 ranked fixes
C0603	Active Air Dam Control Circuit High	4 ranked fixes
C0604	Active Air Dam Control Circuit Performance	4 ranked fixes
C062E	Active Air Dam Supply Voltage Circuit Low	4 ranked fixes
C062F	Active Air Dam Supply Voltage Circuit High	4 ranked fixes
C0630	Active Air Dam Stuck	4 ranked fixes

What this page does not show

This page publishes the fault mechanism and the code index. The licensed dataset adds, for every one of the 15,886 codes, the full authored repair set (56,729 procedures in total) with the fields deliberately withheld here:

Procedures 2..n after the first-listed procedure
Aftermarket parts cost ranges in USD (est_parts_cost_min/max_usd)
Professional labor-hour estimates (est_labor_hours)
Step-by-step diagnostic and repair instructions
Replacement-part mappings and catalog lookups
6,637 manufacturer-specific OEM codes across 32 makes ($149 tier)

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