What Does C1726 Mean?
The right rear electronically controlled damper actuator has a wiring fault where the control circuit is shorted to vehicle ground. The suspension module detects that the right rear damper control signal is being pulled to 0V, preventing normal damping control. The driver will likely notice the right rear corner of the vehicle riding differently than the left rear, with potential harshness or excessive bouncing.
Common Causes
35%
Damaged or chafed wiring harness between suspension module and right rear damper, contacting chassis ground
30%
Failed right rear damper actuator with internal short to ground
20%
Corroded or water-damaged connector at the right rear damper actuator
10%
Suspension control module internal output driver failure
5%
Ground path fault or chassis ground corrosion near the right rear damper
Diagnostic Steps
1
Disconnect the right rear damper actuator connector and inspect for water damage, corrosion, bent or green-colored pins, and cracked housing.
2
With the connector unplugged, measure resistance from each actuator control pin to chassis ground — should read OL (open). Any low resistance indicates a harness-side short to ground.
3
Measure the damper actuator coil resistance across its terminals — compare to spec (typically 3-12 ohms). Also verify no continuity between coil terminals and the actuator body.
4
With the actuator disconnected, use the scan tool to command the damper and verify the module outputs correct voltage at the harness connector, confirming the module side is functional.
5
Inspect the harness routing along the right rear wheel well, subframe, and suspension linkage for areas where the wire insulation may have worn through from vibration or contact with metal edges.
Estimated Repair Cost
$150 - $800
Parts + labor, varies by vehicle and location
The right rear electronically controlled damper actuator has a wiring fault where the control circuit is shorted to vehicle ground. The suspension module detects that the right rear damper control signal is being pulled to 0V, preventing normal damping control. The driver will likely notice the righ...
The most common cause of C1726 (Right Rear Damper Actuator Short Circuit to Ground) is: Damaged or chafed wiring harness between suspension module and right rear damper, contacting chassis ground
Typical repair costs for C1726 range from $150 to $800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
The vehicle is drivable at moderate speeds. The right rear damper will operate at a fixed default setting, causing uneven ride characteristics. Handling may feel unpredictable during cornering, particularly right turns. Avoid spirited driving and have the issue repaired before any long trips.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to C1726 to identify the root cause.
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Quick Info
Category
Chassis
System
Active Suspension
Difficulty
Type
Manufacturer
Recommended Tools
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