P0585

Cruise Control Multi-Function Input A and B Correlation

Moderate severity

Cruise control uses two redundant multiplexed inputs (A and B) for safety. The two inputs do not agree - one reports a button press the other does not, or both report incompatible levels at the same time.

Common causes

Stalk module ageing - drift between A and B
One of the most commonly reported causes for this code — check this first.
high
Typical part cost: $130-440
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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 P0585 mean?

P0585 means "Cruise Control Multi-Function Input A and B Correlation". 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 P0585?

stalk module ageing - drift between a and b — 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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