C0620 on Cadillac
Right Front Position (Ride Height) Sensor Circuit
C0620 on Cadillac vehicles indicates right front position (ride height) sensor circuit. Au7o has documented this code across 1 Cadillac model — most commonly on XTS. Manufacturer-specific (General Motors, electronic/Autoride suspension). The suspension control module supplies a 5-volt reference to each ride height position sensor and expects a 0.35–4.75 volt signal back representing the distance between the body and the wheel. This code sets when the right front sensor signal stays outside that range for several seconds during normal driving. It is one of a set of corner codes — C0615 covers the left front — and symptoms typically include a Service Suspension or Service Ride Control message, uneven ride height, and loss of automatic leveling or damping control. Typical repair costs on Cadillac range from $700 to $2,500, depending on the specific model and root cause.
Common Causes of C0620
- •Failed right front position/ride height sensor
- •Broken or disconnected sensor link/arm to the control arm
- •Damaged, chafed, or corroded sensor wiring or connector
- •Open, short to ground, or short to voltage in the sensor circuit
- •Faulty electronic suspension control module
C0620 on Cadillac by Model
Cadillac XTS(1 issue)
- Rear Air Suspension Sudden Collapse (F38 Air Ride)2013-2019
XTS models equipped with the optional rear air-leveling suspension (RPO F38) suffer sudden, total collapse of the rear air springs/struts, often without warning and sometimes at highway speed. NHTSA/CarComplaints reports describe the rear dropping so low the tires nearly contact the wheel wells, causing the rear end to bounce and loss of vehicle control. Root causes include failed rear air springs (perforation/dry-rot), a worn-out air dryer/desiccant that lets moisture accumulate, and air compressor/air-line failures. A 'Service Leveling System' message and the car sitting low or unlevel are the early warning signs. The 2013 model year alone shows ~24 logged suspension complaints, the highest-volume XTS problem after CUE.
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View C0620 across all makes →Frequently Asked Questions
What does C0620 mean on Cadillac?▼
C0620 stands for "Right Front Position (Ride Height) Sensor Circuit." Manufacturer-specific (General Motors, electronic/Autoride suspension). The suspension control module supplies a 5-volt reference to each ride height position sensor and expects a 0.35–4.75 volt signal back representing the distance between the body and the wheel. This code sets when the right front sensor signal stays outside that range for several seconds during normal driving. It is one of a set of corner codes — C0615 covers the left front — and symptoms typically include a Service Suspension or Service Ride Control message, uneven ride height, and loss of automatic leveling or damping control. On Cadillac specifically, this code is documented across 1 model.
What causes C0620 on Cadillac vehicles?▼
Common causes on Cadillac: Failed right front position/ride height sensor, Broken or disconnected sensor link/arm to the control arm, Damaged, chafed, or corroded sensor wiring or connector, Open, short to ground, or short to voltage in the sensor circuit, Faulty electronic suspension control module. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix C0620 on a Cadillac?▼
Repair costs on Cadillac range from $700 to $2,500, depending on the specific model and root cause.
Which Cadillac models have C0620 documented?▼
Au7o has documented C0620 on 1 Cadillac model: XTS.