P0564 low

Cruise Control Multi-Function Input A Circuit

The P0564 code means the vehicle's onboard diagnostic system has detected: Cruise Control Multi-Function Input A Circuit. This is a low severity code.

My Garage →

Keep driving?: Yes, but fix soon
DIY difficulty: moderate
Estimated cost: $100 - $500 (parts and labor)

Recommended Tool

ANCEL AD310 OBD-II Scanner

Best-selling code reader on Amazon. Reads and clears check engine codes on any 1996+ vehicle. Under $30.

Check Price on Amazon

Affiliate link -- we earn a commission at no extra cost to you.

Every Tech Needs This

AstroAI Digital Multimeter

Essential for diagnosing sensor codes, checking voltage, and testing circuits. Under $15 and pays for itself on the first job.

Check Price on Amazon

Affiliate link -- we earn a commission at no extra cost to you.

Common Symptoms

Check Engine Light on
Cruise control not functioning
Cruise control set/resume buttons unresponsive
Cruise indicator light not illuminating

Probable Causes (Ranked by Likelihood)

Faulty cruise control switch on steering wheel Very High
Damaged clockspring in steering column High
Wiring fault in cruise control circuit Moderate
ECM cruise control input failure Low

Step-by-Step Diagnostic Procedure

Use a scan tool to monitor cruise control switch inputs while pressing each button
Inspect the clockspring connector in the steering column for proper connection
Test cruise control switch continuity for each position using an ohmmeter
Check for other steering wheel-mounted switch failures that share the clockspring (horn, airbag)

Frequently Asked Questions

What is the cruise control multi-function input?

Modern cruise control systems use a single multi-function switch with multiple button positions (set, resume, coast, accelerate, cancel). The input A circuit handles a specific combination of these functions depending on the manufacturer.

Can a bad clockspring cause P0564?

Yes. The clockspring is the spiral electrical connector in the steering column that allows the steering wheel to rotate while maintaining electrical connections. If it is damaged, cruise control, horn, and airbag circuits can all be affected.

Will P0564 affect my airbag system?

P0564 specifically relates to cruise control, but if the root cause is a damaged clockspring, the airbag system may also be affected since it often shares the same clockspring connection. Check for airbag warning lights.