What Does C1762 Mean?
The rear air suspension height sensor high-range (SE) signal circuit is shorted to battery voltage. The module sees a constant high voltage on the signal wire rather than a proportional ride height signal. Rear height control is disabled.
Common Causes
35%
Signal wire chafed against a power wire in the harness bundle
25%
Connector pin cross-contact or corrosion bridging signal to power
25%
Internal sensor failure pulling signal high
15%
Harness damage from road debris near the rear axle area
Diagnostic Steps
1
Step 1: Disconnect the rear height sensor and measure voltage on the signal wire at the harness side — battery voltage present confirms a harness short.
2
Step 2: Disconnect at the module and test the harness alone for a short between the signal wire and any power wire.
3
Step 3: Visually trace the harness along the rear axle and body, looking for damage from road debris or exhaust heat.
4
Step 4: Test the sensor by measuring between signal and power pins for an internal short.
5
Step 5: Repair the short or replace the sensor, clear codes, and run the calibration procedure.
Estimated Repair Cost
$150 - $500
Parts + labor, varies by vehicle and location
The rear air suspension height sensor high-range (SE) signal circuit is shorted to battery voltage. The module sees a constant high voltage on the signal wire rather than a proportional ride height signal. Rear height control is disabled.
The most common cause of C1762 (Air Suspension Rear Height Sensor High (SE) Signal Circuit Short To Battery) is: Signal wire chafed against a power wire in the harness bundle
Typical repair costs for C1762 range from $150 to $500, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Rear ride height regulation is offline. Vehicle may ride at default height. Drivable carefully but handling under load may be compromised.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to C1762 to identify the root cause.
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Quick Info
Category
Chassis
System
Air Suspension System
Difficulty
Type
Manufacturer
Recommended Tools
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