C0559
Power Steering Control Module Range/Performance – Rear
Rear power steering control module reading implausible (rear-wheel-steering or rear-axle steering systems).
Rear power steering control module reading implausible (rear-wheel-steering or rear-axle steering systems).
Common causes
- high
Module reading drifted
One of the most commonly reported causes for this code — check this first.
Typical part cost: $440-3300
- low
Sensor element aged beyond calibration window
Less common, but worth ruling out after the more likely causes.
Typical part cost: $440-3300
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does C0559 mean?
C0559 means "Power Steering Control Module Range/Performance – Rear". It is a generic OBD-II code that points to a fault in the chassis.
What are the most common causes of C0559?
module reading drifted; sensor element aged beyond calibration window; sensor mounting loose - signal damping — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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