What Does C1773 Mean?
The air suspension vent solenoid output circuit is shorted to ground. The control module cannot properly control the vent solenoid because the control wire is grounded. This can prevent venting or cause the module driver to shut down.
Common Causes
35%
Control wire chafed against the chassis or a grounded component
25%
Water intrusion in the solenoid connector creating a ground path
25%
Internal ground short in the solenoid coil
15%
Pinched wire at a mounting point
Diagnostic Steps
1
Step 1: Disconnect the solenoid and measure resistance from the control pin on the harness side to chassis ground — should be OL.
2
Step 2: If grounded, disconnect at the module and section-test the wire.
3
Step 3: Inspect the harness for chafing, especially where it routes near the compressor, frame rails, and body panels.
4
Step 4: Test the solenoid for internal shorts to ground.
5
Step 5: Repair the ground short, clear codes, and test vent operation.
Estimated Repair Cost
$150 - $600
Parts + labor, varies by vehicle and location
The air suspension vent solenoid output circuit is shorted to ground. The control module cannot properly control the vent solenoid because the control wire is grounded. This can prevent venting or cause the module driver to shut down.
The most common cause of C1773 (Air Suspension Vent Solenoid Output Circuit Short To Ground) is: Control wire chafed against the chassis or a grounded component
Typical repair costs for C1773 range from $150 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Air venting may be erratic or disabled. Drivable but suspension may not function correctly. Schedule repair soon.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to C1773 to identify the root cause.
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Quick Info
Category
Chassis
System
Air Suspension System
Difficulty
Type
Manufacturer
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
