P0586
Cruise Control Vent Control Circuit/Open
Cruise control
Generic OBD-II
Low
What it means
P0586 means the cruise control module has detected an open in the vent control circuit. On vacuum-actuated cruise systems the vent valve releases vacuum from the servo to let the throttle return, so a fault here can stop cruise control from engaging or disengaging cleanly. It's a comfort-feature fault with no impact on normal driving.
Low
Can I keep driving? Safe to drive — only cruise control is affected; normal driving, braking, and acceleration are unchanged.
Common symptoms
What you'll notice
- Check-engine light on
- Cruise control won't engage or disengage properly
- Cruise control operates erratically or drops out
- No effect on normal driving
Common causes
Most likely first
- Faulty cruise control vent valve (vacuum-actuated servo systems)Likely
- Open or damaged wiring in the vent control circuitCommon
- Loose or corroded connector at the servo/vent solenoidCommon
- Failed cruise control moduleLess often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and inspect the cruise control servo/vent solenoid connector and wiring for opens or corrosion — the code specifically flags an open circuit.
- Check continuity of the vent control wiring between the module and the solenoid.
- Test the vent solenoid's resistance against spec and replace it if it reads open.
- If the wiring and solenoid are good, test the cruise control module. Clear the code and re-test.
FAQ
Quick answers
Is it safe to drive with P0586?+
Yes. This affects only the cruise control's vacuum vent control. The vehicle drives normally; you just may lose reliable cruise operation until it's fixed.
Can I just clear P0586?+
You can, but the code will return as soon as the module again detects the open vent control circuit. Repair the wiring or solenoid to keep it away.
Related codes
Often seen with P0586
Read & clear P0586 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX