What Does C1785 Mean?
The ICCS2 passenger-side right damper output circuit has a short to ground. The suspension module cannot properly control the right damper solenoid because the signal wire is being pulled to ground. The system defaults to a fixed damper setting on that corner. Ride quality is degraded and the driver will see a suspension warning indicator.
Common Causes
35%
Wiring harness chafed against body or suspension metal, shorting signal to ground
30%
Right damper solenoid internally shorted to ground
20%
Water intrusion or corrosion at the damper solenoid connector creating ground path
10%
Suspension control module internal fault on right output driver
5%
Ground contamination from adjacent circuit via shared connector or splice
Diagnostic Steps
1
Disconnect the right damper solenoid and measure resistance from the signal wire (module side) to chassis ground — must be infinite (OL). Low resistance confirms a ground short in the harness.
2
Test the solenoid coil resistance and insulation to ground: coil should be 3-8 ohms, and each terminal to body should be infinite (OL).
3
Inspect the harness along its entire route from module to damper, especially near the right shock tower, fender liner, and any body panel pass-through grommets.
4
Examine the connector for signs of water, corrosion, green/white deposits on pins, or damage. Clean terminals and reseal with dielectric grease.
5
Clear the code and road test over varied surfaces — monitor the right damper current PID if available. If the code returns immediately, the short is hard; if intermittent, focus on harness flex points.
Estimated Repair Cost
$200 - $900
Parts + labor, varies by vehicle and location
The ICCS2 passenger-side right damper output circuit has a short to ground. The suspension module cannot properly control the right damper solenoid because the signal wire is being pulled to ground. The system defaults to a fixed damper setting on that corner. Ride quality is degraded and the driver...
The most common cause of C1785 (ICCS2 DL Right Output Short Circuit to GND) is: Wiring harness chafed against body or suspension metal, shorting signal to ground
Typical repair costs for C1785 range from $200 to $900, depending on the vehicle, location, and whether you do it yourself or go to a shop.
The vehicle can be driven but handling balance is compromised with one corner of the adaptive suspension disabled. Reduce speed in curves and on rough roads. Repair at earliest convenience to restore full dynamic suspension control.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to C1785 to identify the root cause.
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Quick Info
Category
Chassis
System
Active / Adaptive Suspension
Difficulty
Type
Manufacturer
Recommended Tools
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