What Does C1702 Mean?
The suspension control module has detected that the right rear height or position sensor circuit is shorted to battery voltage (Vbat). The module reads a constant high voltage on the signal wire instead of the normal variable signal that corresponds to suspension travel. This prevents accurate right rear corner position sensing. The driver will see a ride control warning light and may notice the suspension defaulting to a fixed setting.
Common Causes
35%
Chafed or damaged wiring in the right rear sensor harness with the signal wire contacting a power source
25%
Corroded or water-damaged connector at the right rear sensor with internal bridging between power and signal pins
25%
Internal failure in the right rear sensor with the sensing element shorted to the supply rail
15%
Wiring routed near heat sources or moving suspension components causing insulation failure
Diagnostic Steps
1
With key on engine off, backprobe the right rear sensor signal wire at the module connector — voltage should vary with suspension travel (0.5–4.5V typical), not be fixed near battery voltage.
2
Disconnect the right rear sensor connector and recheck the signal wire voltage at the module — if voltage drops to near 0V, the sensor has an internal short; if it stays high, the short is in the wiring.
3
Inspect the right rear sensor wiring harness along its entire routing path for chafing, heat damage, or contact with battery-positive wiring. Pay special attention where it passes near exhaust components or suspension mounting points.
4
Examine the sensor connector for corrosion, moisture, or pin damage that could bridge the 5V supply to the signal circuit. Clean contacts and test for pin-to-pin resistance.
5
Measure insulation resistance between the signal wire and Vbat — should be greater than 10K ohms (infinite on a healthy circuit).
6
If wiring is intact, replace the right rear sensor and verify the signal sweeps properly through full suspension travel.
Estimated Repair Cost
$100 - $500
Parts + labor, varies by vehicle and location
The suspension control module has detected that the right rear height or position sensor circuit is shorted to battery voltage (Vbat). The module reads a constant high voltage on the signal wire instead of the normal variable signal that corresponds to suspension travel. This prevents accurate right...
The most common cause of C1702 (RightRear Sensor Circuit Short to Vbat) is: Chafed or damaged wiring in the right rear sensor harness with the signal wire contacting a power source
Typical repair costs for C1702 range from $100 to $500, depending on the vehicle, location, and whether you do it yourself or go to a shop.
The right rear suspension position is incorrectly reported. The system will default to a fixed damping mode. The vehicle is drivable at moderate speeds, but handling may be unpredictable during aggressive maneuvers on uneven surfaces. Have this diagnosed within a few days.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to C1702 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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