C0545 on Cadillac
Electronic Stability Control Inhibit
C0545 on Cadillac vehicles indicates electronic stability control inhibit. Au7o has documented this code across 1 Cadillac model — most commonly on XT6. This chassis/brake code indicates the electronic stability control (ESC) system has been inhibited, meaning it has temporarily disabled itself because of a related fault or invalid condition. Stability control helps keep the vehicle from skidding by selectively braking wheels and managing engine power, and it relies on inputs like wheel speed, steering angle, and yaw sensors. When one of those inputs is missing or implausible, the system shuts itself off and sets this code. Often it is a secondary code triggered by another underlying fault rather than a problem with stability control hardware itself. Typical repair costs on Cadillac range from $1,500 to $2,600, depending on the specific model and root cause.
Common Causes of C0545
- •Faulty or dirty wheel speed sensor
- •Steering angle sensor fault or needing calibration
- •Yaw rate / lateral acceleration sensor fault
- •Low brake fluid or related brake system fault
- •Damaged wiring or connectors to a sensor
- •Related ABS/traction control fault setting this as secondary
- •Faulty ABS/ESC control module
C0545 on Cadillac by Model
Cadillac XT6(1 issue)
- Electric Power Steering Rack Failure — "Steering Assist Is Reduced / Service Power Steering" with C0460 or C05452020-2023
XT6 owners report a "Steering Assist is Reduced — Drive with Care" or "Service Power Steering" message in the driver information center, usually with a noticeable increase in steering effort. GM bulletin 20-NA-215 covers this condition on the XT5 and XT6 and ties it to DTCs C0460 and/or C0545 stored in the power steering module. The XT6 uses a belt-drive electric rack with the motor and control module integrated into the steering gear, so an internal fault or a torque-sensor signal fault sets the code and the module deliberately cuts or reduces assist rather than allowing erratic assist. Steering is still mechanically connected — the car remains steerable — but effort rises sharply, which is most alarming at parking-lot speeds or in an evasive maneuver. Owners also describe a separate, milder version where assist fades after sustained low-speed maneuvering and returns once the system cools; that thermal derate is normal protection, not a failed rack, and it clears itself.
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View C0545 across all makes →Frequently Asked Questions
What does C0545 mean on Cadillac?▼
C0545 stands for "Electronic Stability Control Inhibit." This chassis/brake code indicates the electronic stability control (ESC) system has been inhibited, meaning it has temporarily disabled itself because of a related fault or invalid condition. Stability control helps keep the vehicle from skidding by selectively braking wheels and managing engine power, and it relies on inputs like wheel speed, steering angle, and yaw sensors. When one of those inputs is missing or implausible, the system shuts itself off and sets this code. Often it is a secondary code triggered by another underlying fault rather than a problem with stability control hardware itself. On Cadillac specifically, this code is documented across 1 model.
What causes C0545 on Cadillac vehicles?▼
Common causes on Cadillac: Faulty or dirty wheel speed sensor, Steering angle sensor fault or needing calibration, Yaw rate / lateral acceleration sensor fault, Low brake fluid or related brake system fault, Damaged wiring or connectors to a sensor. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix C0545 on a Cadillac?▼
Repair costs on Cadillac range from $1,500 to $2,600, depending on the specific model and root cause.
Which Cadillac models have C0545 documented?▼
Au7o has documented C0545 on 1 Cadillac model: XT6.