What Does C1713 Mean?
The suspension control module has detected a general circuit fault in the left front sensor. This sensor provides ride height or body acceleration data for the left front corner. A circuit fault indicates intermittent, erratic, or out-of-range readings that don't fit a specific open or short pattern. The ride control system may intermittently switch between normal and default modes depending on the severity of the signal disruption.
Common Causes
30%
Intermittent connection at the left front sensor connector due to vibration or marginal corrosion
30%
Left front sensor developing internal wear with noisy or erratic output
20%
Wiring harness partially damaged by steering component contact or road debris
20%
Sensor linkage worn or binding, causing mechanical dead spots in the signal
Diagnostic Steps
1
Monitor the left front sensor live data on the scan tool during a test drive — observe for signal dropouts, spikes, or dead spots that indicate intermittent failure.
2
Wiggle-test the left front sensor connector and harness while monitoring the signal for any correlation between movement and signal disruption.
3
Inspect the sensor linkage at the left front — the link arm should move freely through its full range without play, binding, or loose pivot points.
4
Check and clean the sensor connector terminals. Look for spread pins, corrosion, or moisture. Apply dielectric grease after cleaning.
5
Compare the left front sensor output to the right front sensor at the same ride height — readings should be within 10% of each other at rest.
6
If the sensor shows erratic readings even with a solid connection and good linkage, replace the left front sensor and verify proper operation.
Estimated Repair Cost
$80 - $450
Parts + labor, varies by vehicle and location
The suspension control module has detected a general circuit fault in the left front sensor. This sensor provides ride height or body acceleration data for the left front corner. A circuit fault indicates intermittent, erratic, or out-of-range readings that don't fit a specific open or short pattern...
The most common cause of C1713 (Left Front Sensor Circuit Fault) is: Intermittent connection at the left front sensor connector due to vibration or marginal corrosion
Typical repair costs for C1713 range from $80 to $450, depending on the vehicle, location, and whether you do it yourself or go to a shop.
The left front suspension position data is intermittently unreliable. The vehicle is safe for normal driving, but the ride control system may occasionally default, causing momentary ride quality changes. Schedule diagnosis within the next week.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to C1713 to identify the root cause.
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Quick Info
Category
Chassis
System
Suspension / Ride Control
Difficulty
Type
Manufacturer
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