What Does C1924 Mean?
The steering module has detected a short-to-ground in the VAPS solenoid actuator output circuit. The output wire is grounding out, preventing the module from properly energizing the solenoid. This typically de-energizes the solenoid, resulting in very heavy steering effort at all speeds.
Common Causes
40%
Damaged output wire insulation contacting the steering gear housing, subframe, or engine block
25%
Internal solenoid short with coil winding contacting the solenoid valve body (ground)
25%
Water intrusion into the solenoid connector creating a conductive ground path
10%
Steering module internal ground fault on the output driver
Diagnostic Steps
1
Step 1: Disconnect the solenoid and measure resistance from each terminal to the valve body. Below 10k ohms indicates an internal ground fault.
2
Step 2: With solenoid disconnected, measure resistance from the output wire to chassis ground. Low resistance confirms wiring short.
3
Step 3: Inspect the harness near the steering gear for chafing against metal components.
4
Step 4: Check the connector for moisture and corrosion. Power steering fluid at the solenoid seal can cause this.
5
Step 5: Repair the ground fault and verify proper steering assist variation during a road test.
Estimated Repair Cost
$100 - $600
Parts + labor, varies by vehicle and location
The steering module has detected a short-to-ground in the VAPS solenoid actuator output circuit. The output wire is grounding out, preventing the module from properly energizing the solenoid. This typically de-energizes the solenoid, resulting in very heavy steering effort at all speeds.
The most common cause of C1924 (VAPS Solenoid Actuator Output Circuit Short To Ground) is: Damaged output wire insulation contacting the steering gear housing, subframe, or engine block
Typical repair costs for C1924 range from $100 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Heavy steering effort from a grounded VAPS circuit makes the vehicle difficult to steer at low speeds and can be dangerous during emergency maneuvers where quick steering response is critical.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to C1924 to identify the root cause.
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Quick Info
Category
Chassis
System
Variable Assist Power Steering (VAPS)
Difficulty
Type
Manufacturer
Recommended Tools
OBD2 Scanner
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