What Does C1797 Mean?
The right rear air spring solenoid output circuit has a short to battery voltage. The air suspension module detects unwanted battery voltage on the RR solenoid control line. This prevents proper solenoid control and may cause the solenoid to remain energized or behave erratically. Ride height control on the right rear is disabled.
Common Causes
35%
Wiring harness damage shorting RR solenoid wire to adjacent power wire
25%
RR air spring solenoid with internal short to power
20%
Connector contamination creating conductive path to power terminal
15%
Air suspension module output circuit failure feeding back voltage
5%
Harness routed against or spliced into powered circuit
Diagnostic Steps
1
Disconnect the RR solenoid connector and measure voltage on the harness-side control pin with key on — should not show constant battery voltage. Constant 12V confirms a short to B+ in the wiring.
2
Test the solenoid coil (3-10 ohms) and check insulation between coil terminals and housing — should be fully isolated.
3
With the solenoid disconnected and key off, check the control wire for continuity to any 12V source wire in the harness bundle.
4
Inspect the harness routing near the right rear axle, fuel tank, and taillight wiring for chafing where the solenoid wire may contact a power wire.
5
If the harness and solenoid test clean, disconnect the module and recheck voltage at the solenoid wire to determine if the module is the source.
Estimated Repair Cost
$150 - $800
Parts + labor, varies by vehicle and location
The right rear air spring solenoid output circuit has a short to battery voltage. The air suspension module detects unwanted battery voltage on the RR solenoid control line. This prevents proper solenoid control and may cause the solenoid to remain energized or behave erratically. Ride height contro...
The most common cause of C1797 (Air Suspension RR Air Spring/Shock Solenoid Output Circuit Short To Battery) is: Wiring harness damage shorting RR solenoid wire to adjacent power wire
Typical repair costs for C1797 range from $150 to $800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
If the short keeps the solenoid energized, the air spring could over-inflate or continuously vent. Check ride height visually — if abnormal, do not drive. If the system has entered a safe failsafe mode and height appears normal, careful driving to a shop is acceptable.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to C1797 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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