P0582 Cruise Control Vacuum Control Circuit /Open
OBD-II Trouble Code Technical Description
Cruise Control Vacuum Control Circuit /Open
What does that mean?
This is a generic powertrain diagnostic trouble code (DTC) and typically applies to OBD-II vehicles. Vehicle makes may include but aren't limited to Dodge, Chrysler, Jeep, Chevy, Hyundai, Ram, Ford, etc.
There are numerous possible ways your vehicle goes about controlling your cruise control system. One of the avenues manufacturers tend to use to control the cruise control, is a vacuum controlled and operated system.
Most times, they use vacuum as an efficient way of controlling a cruise control servo or a similar diaphragm-type control. The vacuum control circuit is integral to the proper operation of this system. The ECM (Engine control module) monitors/adjusts the vacuum control side accordingly, depending on the operator's cruise control demands. If the ECM loses it's monitoring capabilities to the cruise control vacuum control circuit, it will most likely cause your cruise control to stop functioning as it should. A lot of times, these systems will include a vacuum solenoid, which is in charge of controlling the vacuum flow to the control side of the system (i.e. it controls the speed of the vehicle, when cruise is active), that said, in other systems, the vacuum responsibilities are consolidated to solely the cruise control servo. As with many faults, this could be strictly an electrical issue caused by a mechanical issue, vice versa or both.
While monitoring your cruise control sensors, circuits, switches, etc., not to mention all the other systems in your vehicle, the ECM has detected a fault within the cruise control vacuum control circuit. Most likely one or more of the electrical values being monitored has gone out of range (i.e. beyond manufacturer specific-desired values).
For P0582, it could be a general fault within the circuit or a loss of continuity in the cruise control vacuum electrical circuit.
What is the severity of this DTC?
To be honest, this fault shouldn't be much of a concern, safety-wise. With that said, severity is set to low-medium. Any problem within a vacuum system, which is a lot of times supplied/recycled by the engine, should be addressed sooner rather than later, given some of the possible consequences of neglecting to fix a vacuum system.
I'd say, if you've specifically determined that the engine is not affected by this fault, usually in non intake-supplied vacuum systems, and you can live without cruise control, you should be alright to stall this fault if your budget is limited or other things are of higher priority.
What are some of the symptoms of the code?
Symptoms of a P0582 diagnostic code may include:
Cruise control inoperative CEL (Check engine light) illuminated Certain functions not operating as they should (e.g. set,resume, accel., etc.) Vehicle speed erratic, even with cruise set to specific speed Cruise control light on permanently in instrument cluster One or more cruise control functions not working properly Whistling noises from engine bayWhat are some of the common causes of the code?
Causes for this P0582 cruise control code may include:
Vacuum solenoid defective Cruise control servo defective Vacuum lines broken/cracked/disconnected/kinked Mechanical obstruction in the cruise control servo's operating range Wiring issue (e.g. short, open, corrosion, resistance, chafe, etc.) ECM (Engine control module) issue Mechanical obstruction in vacuum passageways Seized cruise control servo cable Engine vacuum system leak Connector issue (e.g. broken tabs, corroded pins, melted housings, insulation missing, etc.)What are some P0582 diagnostic and troubleshooting steps?
The first step in the troubleshooting process for any malfunction is to research the Technical Service Bu
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