P0579

Cruise Control Multi-Function Input A Circuit Range or Performance

Moderate severity

Same as P0564 with the analogue level inside the plausible range yet not matching any of the calibrated button levels - resistor ladder drifted, contact resistance increased, or wrong stalk module fitted.

Common causes

Resistor ladder drifted
One of the most commonly reported causes for this code — check this first.
high
Typical part cost: $90-390
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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

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Frequently asked questions

What does P0579 mean?

P0579 means "Cruise Control Multi-Function Input A Circuit Range or Performance". It is a generic OBD-II code that points to a fault in the vehicle speed, idle control, auxiliary inputs.

What are the most common causes of P0579?

resistor ladder drifted — 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?

The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.

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