P0580 Code: Cruise Control Multi-Function Input A Circuit Low
🟢 Low severity · drivable
The car drives normally; only the cruise control buttons may not respond.
What P0580 means
The engine computer sees low voltage on the multi-function cruise control input circuit. This usually means the switch signal is shorted to ground or the switch isn't producing the right voltage, so the computer can't read the cruise buttons.
Symptoms
- Check engine light is on
- Cruise control buttons don't respond
- Cruise control won't engage
- Cruise control works only sometimes
Common causes
- most common: Faulty multi-function switch
- common: Short to ground in the input wiring
- common: Loose or corroded connector
- less common: Faulty engine computer
How to fix it
| Fix | DIY? | Typical cost |
|---|---|---|
| Inspect and clean the multi-function switch connector | Yes | $0–20 |
| Replace the multi-function switch | Yes | $50–200 |
| Repair the shorted or damaged wiring | Mechanic | $50–200 |
Frequently asked questions
Can I drive with a P0580 code?
Yes. The car drives normally; only the cruise buttons may stop responding.
What does low mean for the multi-function input?
The computer is seeing too little voltage on the cruise input circuit, usually from a bad switch or a wire shorted to ground.
How much does it cost to fix a P0580?
A multi-function switch is $50–200; wiring repairs run $50–200.
Related codes
P0578
P0578 Code: Cruise Control Multi-Function Input A Circuit Stuck
P0579P0579 Code: Cruise Control Multi-Function Input A Circuit Range/Performance
P0575P0575 Code: Cruise Control Input Circuit
Updated 2026-08. This page is informational and not a substitute for professional diagnosis.