What Does C1712 Mean?
The Road Sensing Suspension (RSS) module has detected an open circuit in the left front damper actuator. This means the electrical connection to the solenoid that controls the shock absorber's damping rate is broken — no current can flow to the actuator. The left front shock absorber will remain in its default (unpowered) state, and the ride control system warning light will be on.
Common Causes
30%
Broken wire in the actuator harness due to fatigue from repeated suspension cycling
25%
Disconnected or unseated connector at the left front damper actuator
25%
Internal open in the solenoid coil winding (burned out from overcurrent or age)
20%
Corroded terminals at the connector causing high resistance effectively creating an open circuit
Diagnostic Steps
1
Check the left front damper actuator connector — ensure it is fully plugged in and the retaining clip is engaged. Road vibration and suspension travel can work connectors loose over time.
2
Disconnect the actuator and measure solenoid coil resistance across the two pins — should typically read 3–8 ohms. An infinite (OL) reading confirms an open coil, requiring actuator replacement.
3
If the solenoid resistance is good, test wiring continuity from the actuator connector back to the module connector — each wire should measure less than 2 ohms.
4
Inspect the wiring harness at flex points near the upper strut mount and inner fender — these are common locations for wire fatigue breaks caused by suspension movement.
5
Check connector terminals for corrosion that could create excessive resistance. Clean terminals with contact cleaner and apply dielectric grease.
6
If the wiring and actuator test good, verify module output by measuring drive voltage at the module connector while commanding the actuator — should see a pulse-width-modulated signal.
Estimated Repair Cost
$150 - $800
Parts + labor, varies by vehicle and location
The Road Sensing Suspension (RSS) module has detected an open circuit in the left front damper actuator. This means the electrical connection to the solenoid that controls the shock absorber's damping rate is broken — no current can flow to the actuator. The left front shock absorber will remain in ...
The most common cause of C1712 (Left Front Damper Actuator Open Circuit) is: Broken wire in the actuator harness due to fatigue from repeated suspension cycling
Typical repair costs for C1712 range from $150 to $800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
The left front damper will remain in its default unpowered state (typically soft or medium). The vehicle is drivable, but cornering balance and ride quality will be affected since only three corners are actively controlled. Avoid spirited driving and schedule repair at your convenience.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to C1712 to identify the root cause.
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Quick Info
Category
Chassis
System
Suspension / Ride Control
Difficulty
Type
Manufacturer
Recommended Tools
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