What Does C1707 Mean?
The suspension control module has detected a general circuit fault in the left rear center sensor. The sensor is providing intermittent, erratic, or out-of-range signals that do not meet a specific short or open circuit threshold. This typically indicates a developing failure or connection problem. The ride control system may intermittently default to a fixed mode when the signal is disrupted.
Common Causes
30%
Intermittent connection at the left rear center sensor connector from vibration or marginal corrosion
30%
Sensor developing internal wear producing a noisy or drifting signal
25%
Partially damaged wire in the harness making intermittent contact during vehicle movement
15%
Sensor mounting loosening over time, causing the sensor body to shift and produce erratic readings
Diagnostic Steps
1
Monitor the left rear center sensor live data while driving over varied surfaces — watch for dropouts, spikes, or inconsistent readings compared to other sensor channels.
2
Perform a wiggle test on the sensor connector and wiring while observing the signal on the scan tool. Note any signal disruptions correlated with harness or connector movement.
3
Check the sensor mounting — it should be firmly secured to the body or subframe with no looseness. Tighten or replace mounting hardware as needed.
4
Inspect and clean the sensor connector terminals. Apply dielectric grease and ensure a firm connection.
5
If the sensor is accessible, compare its raw output against the right rear center sensor at rest — they should be similar. A large offset suggests internal drift.
Estimated Repair Cost
$80 - $400
Parts + labor, varies by vehicle and location
The suspension control module has detected a general circuit fault in the left rear center sensor. The sensor is providing intermittent, erratic, or out-of-range signals that do not meet a specific short or open circuit threshold. This typically indicates a developing failure or connection problem. ...
The most common cause of C1707 (Left Rear Center Sensor Circuit Fault) is: Intermittent connection at the left rear center sensor connector from vibration or marginal corrosion
Typical repair costs for C1707 range from $80 to $400, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Intermittent signal issues with one secondary sensor. The vehicle is safe for normal driving. Ride quality may occasionally fluctuate. This is a low-urgency issue but should be addressed to prevent further degradation of ride control performance.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to C1707 to identify the root cause.
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Quick Info
Category
Chassis
System
Suspension / Ride Control
Difficulty
Type
Manufacturer
Recommended Tools
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