What Does P0582 Mean?
The ECM has detected an open circuit in the cruise control vacuum control solenoid circuit. On vehicles with vacuum-operated cruise control (typically using a vacuum servo to operate the throttle cable), this solenoid controls the vacuum supply to the cruise control servo. An open circuit means the solenoid is not receiving power or ground, preventing vacuum application to maintain set speed.
Common Causes
35%
Failed cruise control vacuum solenoid with open internal coil winding
30%
Open circuit in the wiring between the ECM and the cruise control vacuum solenoid due to a broken wire or disconnected connector
20%
Blown fuse or open relay contact in the cruise control solenoid power supply circuit
15%
Corroded or backed-out connector pins at the vacuum solenoid preventing electrical connection
Diagnostic Steps
1
Step 1: Locate the cruise control vacuum solenoid (typically mounted near the brake booster or on the intake manifold). Inspect the connector for damage, corrosion, or disconnection.
2
Step 2: Disconnect the solenoid and measure coil resistance across the two terminals. A good solenoid typically reads 30-60 ohms. An open-loop (OL/infinity) reading indicates a burned-out coil.
3
Step 3: With the solenoid disconnected, check for battery voltage on the power supply wire with key on. If no voltage, check the cruise control fuse and relay. Replace blown fuse after checking for shorts.
4
Step 4: Verify the ECM ground-side driver is functional by measuring voltage at the ECM connector pin for the vacuum solenoid control. The ECM should pull the pin low when commanding cruise operation.
5
Step 5: If the solenoid and power supply test good, check continuity of both wires from the ECM to the solenoid. Repair any opens. After repair, apply 12V directly to the solenoid to verify it clicks and passes vacuum.
Estimated Repair Cost
$30 - $200
Parts + labor, varies by vehicle and location
The ECM has detected an open circuit in the cruise control vacuum control solenoid circuit. On vehicles with vacuum-operated cruise control (typically using a vacuum servo to operate the throttle cable), this solenoid controls the vacuum supply to the cruise control servo. An open circuit means the ...
The most common cause of P0582 (Cruise Control Vacuum Control Circuit /Open) is: Failed cruise control vacuum solenoid with open internal coil winding
Typical repair costs for P0582 range from $30 to $200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
The cruise control servo cannot apply vacuum to maintain speed, rendering cruise control inoperative. The throttle returns to the driver's foot pedal control, so there is no safety hazard. This only affects vehicles with cable-throttle vacuum cruise systems.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0582 to identify the root cause.
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Quick Info
Category
Powertrain
System
Cruise Control System (Vacuum-Actuated)
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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