01 You Might Stall On The Highway If You Keep Ignoring That Ra… • 02 The Complete Guide to the Major Parts of an Excavator • 03 U0018: Medium Speed CAN Communication Bus (-) shorted to Bu… • 04 How Far Can You Drive a Car with a Cylinder Misfire? • 05 Eco-Friendly and Powerful: The Best Fuel-Efficient SUVs for… • 06 Toyota Noah vs Nissan Serena: A Comprehensive Comparison • 07 What Does It Mean When Your Car Says “Engine Power Reduced”? • 08 The Most Problematic Mitsubishi Cars: A Comprehensive Review • 09 Camshaft Position Sensor: Everything You Need to Know • 10 System Too Lean: Causes, Symptoms, and Troubleshooting of a… •

DTC codes / P05xx · Vehicle speed, idle control and auxiliary inputs / P0582

P0582Cruise Control Vacuum Control Circuit/Open

P0582 means the powertrain control module (PCM) has detected an open circuit or excessive resistance in the cruise control vacuum control solenoid circuit. The PCM commands the solenoid to regulate vacuum to the cruise servo, but the electrical feedback does not match the expected voltage or current, so the PCM stores this code and disables cruise control.

SystemPowertrain
Code typeGeneric (all makes)
SeverityLow
Fix difficultyIntermediate
AreaVehicle speed, idle control and auxiliary inputs

Symptoms you may notice

  • Cruise control will not engage or drops out intermittently while driving
  • Cruise control indicator light on the dashboard may flash or stay off
  • Often no symptoms besides the warning light, with cruise simply becoming inoperative
  • Engine may idle slightly rough or have a vacuum leak noise if the solenoid is stuck open
  • Possible hesitation or surge when cruise is attempted at highway speed
  • Other driver-assist features that rely on cruise control may be disabled

Common causes, most likely first

  1. Broken, corroded, or disconnected wiring or connector at the cruise control vacuum solenoid
  2. Failed cruise control vacuum control solenoid (open coil or stuck valve)
  3. Vacuum hose disconnected, cracked, or collapsed between the solenoid and the cruise servo
  4. Faulty PCM driver circuit for the solenoid (less common)
  5. Corrosion or water intrusion in the solenoid connector causing high resistance
  6. Aftermarket alarm or remote start wiring tapped into the cruise circuit incorrectly

How to diagnose and fix it

  1. Inspect the cruise control vacuum solenoid connector and wiring for corrosion, looseness, or damage, and repair as needed
  2. Check the vacuum hoses from the solenoid to the servo and intake for cracks, disconnects, or collapse, and replace any faulty hose
  3. Measure resistance across the solenoid coil with a multimeter and compare to the manufacturer's specification; replace the solenoid if open or out of range
  4. Backprobe the solenoid control wire at the PCM and check for battery voltage or ground pulse when cruise is commanded; repair open or shorted wiring
  5. Test the solenoid by applying 12 volts and vacuum directly to confirm it clicks and holds vacuum; replace if it does not operate
  6. Clear the code and road test the vehicle at highway speed to verify cruise control engages and the code does not return
  7. If all electrical and vacuum checks pass, follow the manufacturer's diagnostic flow for PCM driver testing before replacing the PCM

What a vacuum solenoid code really tells you

  • A P0582 is often set by a simple disconnected vacuum hose at the solenoid rather than a failed electrical part, so always check the hoses before condemning the solenoid.
  • Some vehicles use the same solenoid for both cruise control and another vacuum function, so a failure can cause symptoms outside cruise control that owners miss.
  • The code can be stored intermittently by a loose connector that only loses contact on rough roads, so a wiggle test of the harness while monitoring live data is valuable.
  • Aftermarket wiring for alarms or remote starters frequently taps into the cruise control circuit and creates opens that mimic a failed solenoid.
  • A vacuum solenoid that tests good electrically can still be mechanically stuck open or closed, so a functional vacuum test is as important as a resistance check.

Can I keep driving with P0582?

The vehicle remains safe to drive because cruise control is a convenience feature and the PCM limits operation rather than affecting brakes or steering. Avoid using cruise control until repaired, and address any rough idle or vacuum leak symptoms promptly to prevent drivability issues.

Tools that help

Tools we recommend are in the Auto Veteran shop on Amazon. As an Amazon Associate we earn from qualifying purchases.

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.

Running on fumes Free guides aren't free to make. Top up the tank. Any amount, one time. Fuel the Garage