What Does C1717 Mean?
The suspension control module has detected that the left front center sensor circuit is shorted to battery voltage. This secondary sensor, typically a body accelerometer positioned near the center of the front subframe area, is reporting a constant high voltage instead of its normal dynamic signal. The system uses this sensor for precise body motion detection, and the fault reduces the system's ability to optimally control damping at the front of the vehicle.
Common Causes
35%
Wiring harness damage where the signal wire contacts a power source in the engine bay or subframe area
25%
Connector corrosion or water damage bridging the power and signal pins
25%
Internal sensor failure with the output shorted to the supply rail
15%
Improper wiring repair or aftermarket accessory installation creating a short
Diagnostic Steps
1
With key on engine off, measure the left front center sensor signal at the module connector — should vary dynamically, not read near battery voltage (12–14V).
2
Disconnect the sensor and recheck signal wire voltage at the module side — if it drops, the sensor has an internal short; if unchanged, the wiring has a short to power.
3
Inspect the wiring harness path from the module to the sensor, focusing on areas near the engine, power distribution center, and subframe where power wires are concentrated.
4
Check the sensor connector for moisture, corrosion, or bridged pins. Test for pin-to-pin resistance between supply and signal circuits.
5
Replace the sensor if shorted internally and verify the output returns to normal operating range during a test drive.
Estimated Repair Cost
$100 - $500
Parts + labor, varies by vehicle and location
The suspension control module has detected that the left front center sensor circuit is shorted to battery voltage. This secondary sensor, typically a body accelerometer positioned near the center of the front subframe area, is reporting a constant high voltage instead of its normal dynamic signal. ...
The most common cause of C1717 (Left Front Center Sensor Circuit Short to Vbat) is: Wiring harness damage where the signal wire contacts a power source in the engine bay or subframe area
Typical repair costs for C1717 range from $100 to $500, depending on the vehicle, location, and whether you do it yourself or go to a shop.
One front center sensor is providing invalid data. The suspension system will default to a conservative mode for front damping control. The vehicle is safe for normal driving, but ride optimization for the front will be reduced. Repair within a week.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to C1717 to identify the root cause.
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Quick Info
Category
Chassis
System
Suspension / Ride Control
Difficulty
Type
Manufacturer
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