C0602Active Air Dam Control Circuit Low
- Generic OBD-II code · Chassis
- How the car detects it
- C0602 says the control line to the air dam actuator is held below its expected voltage, most often because a motor lead touches ground or because water has bridged pins in the connector. Smart H-bridge drivers such as the DRV8873-Q1 see a grounded output as overcurrent, trip within a few microseconds and turn that half-bridge off, so the motor never gets drive. For a 2025 Ram 1500 with air dam codes, Stellantis has technicians look for corrosion, cut or chafed wires and excess resistance before replacing the dam. Ford fits separate left and right actuators on the F-150, so one side can be at fault alone. No maker documents C0602 itself. The panel stops moving and a warning text may show; high and open faults are C0603 and C0601.
- What you may notice
- Air dam warning message in the instrument cluster
- Air dam stays in one position
- Fault returns as soon as the system commands movement
- Likely causes
- LikelyActuator wire chafed through and touching the body or frame
- PossibleWater and corrosion in the actuator connector after a damaged seal
- PossibleShorted motor or electronics inside the actuator
- Repair
- Medium · Often possible to do yourself.Typical cost: €30 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.