P0584 High signal in the cruise control vacuum control circuit

P0584 – OBD-II Trouble Code Technical Description

Trouble code P0584 indicates that the PCM has detected a high signal fault in the cruise control vacuum control solenoid valve circuit.

What does the fault code mean P0584?

Trouble code P0584 indicates that a high signal level has been detected in the cruise control vacuum control solenoid valve circuit. This means that the vehicle's engine control module (PCM) has detected an electrical problem related to the cruise control system. The cruise control system, which ensures that the vehicle maintains a constant speed, is controlled by the automatic transmission control module (PCM) and the cruise control module, which allows the vehicle's speed to be automatically adjusted. If the PCM detects that the vehicle is no longer able to automatically control its own speed, a self-test will be performed on the entire cruise control system. The P0584 code occurs when the PCM detects a malfunction in the vacuum control solenoid valve circuit.

Possible reasons

Some possible reasons for the P0584 trouble code:

• Solenoid valve failure: The valve itself may be damaged or faulty, resulting in a high signal level in its control circuit.
• Wiring and connections: Breaks, corrosion or damage in the wiring, connections or connectors associated with the solenoid valve can cause improper operation and high signal levels.
• Malfunctioning PCM: Problems with the engine control module (PCM) itself can cause the signals to be read incorrectly and cause the P0584 code to appear.
• Problems with the car's electrical system: Faults in the electrical system, such as a circuit overload or short circuit, can cause a high signal in the valve control circuit.
• Problems with other components of the cruise control system: Malfunctions or improper operation of other components of the cruise control system can also cause the P0584 code to appear.

To accurately determine the cause, it is necessary to conduct a detailed diagnosis using specialized equipment and tools.

What are the symptoms of a fault code? P0584?

Symptoms for a P0584 trouble code may vary depending on the specific vehicle and the nature of the problem, but typically include the following:

• Malfunction of the cruise control system: If you have a cruise control system, it may stop working or function incorrectly.
• Check Engine Light: The Check Engine light on the instrument panel will illuminate. This may occur along with the P0584 trouble code.
• Loss of speed stability: The vehicle may have trouble maintaining a constant speed, especially when using the cruise control system.
• Noticeable changes in engine performance: You may notice unusual changes in engine performance, such as jerking or rough running.
• Reduced fuel efficiency: Fuel efficiency may decrease due to improper operation of the cruise control system and changes in driving mode.

How to diagnose a fault code P0584?

The following steps are recommended to diagnose DTC P0584:

• Reading error codes: Use a diagnostic tool to read error codes from the PCM. Make sure code P0584 is present.
• Checking wiring and connections: Inspect the wiring and connectors connected to the cruise control vacuum control solenoid valve. Check for breaks, damage or corrosion that could cause a high signal level.
• Checking the solenoid valve: Check the solenoid valve itself for faults. This can be done using a multimeter to measure its resistance and make sure it meets the manufacturer's specifications.
• PCM diagnostics: If other tests do not reveal the problem, it may be necessary to diagnose the PCM itself to determine possible problems with its operation.
• Checking other cruise control system components: Check other cruise control system components such as brake switches, speed sensors, and actuators to ensure they are operating properly and are not causing the P0584 code.
• Clearing the error code: After fixing the problem, you need to clear the error code from the PCM memory using a diagnostic scan tool.

If you do not have the necessary experience or tools to perform a diagnosis, it is recommended that you contact a qualified auto mechanic or service center.

Diagnostic errors

When diagnosing DTC P0584, the following errors may occur:

• Insufficient wiring check: Incomplete or incorrect inspection of wiring and connectors may result in missing breaks, damage or corrosion that may be causing high signal levels.
• Misinterpretation of data: Incorrect understanding of the diagnostic data may lead to incorrect conclusions about the causes of the malfunction.
• Replacement of components without prior testing: Replacing the solenoid valve or other cruise control system components without first checking may result in unnecessary repair costs.
• Incorrect PCM diagnosis: If the malfunction is caused by a problem with the PCM, incorrectly diagnosing or incorrectly solving the PCM problem may lead to further problems.
• Skip additional checks: Skipping additional checks of other cruise control system components, such as brake switches or speed sensors, may result in missing other problems that may be related to the P0584 code.

For a successful diagnosis, it is recommended to carefully monitor each step, carry out all necessary checks and, in case of doubt, contact qualified specialists.

How serious is the fault code? P0584?

Trouble code P0584 is not critical to driving safety, but it may cause the cruise control system to become unavailable or not operate properly. The driver may lose the ease of use of cruise control, which may affect comfort and fuel economy on long, long-distance trips. Incorrect operation of cruise control can also result in more frequent gear changes or sudden changes in speed, which can be unpleasant for the driver and passengers. Overall, although the P0584 code is not a critical problem, it is recommended that it be corrected as soon as possible to restore normal functionality of the cruise control system.

What repair will help eliminate the code? P0584?

To resolve DTC P0584, follow these steps:

1. Checking and replacing the solenoid valve: The first step is to check the cruise control system vacuum control solenoid valve. If the valve is faulty, it must be replaced.
2. Checking and restoring wiring: Check the wiring and connectors related to the solenoid valve. If the wiring is broken, damaged or corroded, it should be repaired or replaced.
3. Check and replace the PCM: In rare cases, the problem may be due to a faulty PCM. If all other components are operating normally and the P0584 code reoccurs after replacing or repairing them, the PCM may need to be replaced.
4. Clearing the error code: After troubleshooting, you must clear the error code from the PCM memory using a diagnostic scanner.

It is recommended that diagnosis and repair be carried out by a qualified auto mechanic or service center to ensure the problem is corrected correctly.

What is P0584 Engine Code [Quick Guide]

P0584 – Brand-specific information

Error P0584 is related to the cruise control system vacuum control circuit, decoding for some popular car brands:

1. Volkswagen (VW): Trouble code P0584 on Volkswagen may indicate a high signal problem in the cruise control system vacuum control circuit.
2. Toyota: Error P0584: Cruise control system, vacuum control - signal level high.
3. Ford: For Ford vehicles, this error may indicate problems with the electrical circuit that controls the vacuum control of the cruise control system.
4. Chevrolet (Chevy): On a Chevrolet, trouble code P0584 may indicate signal level problems in the cruise control system vacuum control circuit.
5. Honda: For Honda, this error may indicate problems with the cruise control vacuum control system or the electrical circuits responsible for it.
6. BMW: On BMW vehicles, the P0584 code may indicate a high signal problem in the cruise control vacuum control circuit.
7. Mercedes-Benz: On Mercedes-Benz, this error may indicate a malfunction in the vacuum control system of the cruise control system.
8. Audi: For Audi, trouble code P0584 may indicate problems with the cruise control vacuum control circuit or related components.
9. Nissan: On Nissan vehicles, this error may indicate problems with the cruise control vacuum control system.
10. Hyundai: For Hyundai, this error may indicate problems with a high signal level in the vacuum control circuit of the cruise control system.

Each manufacturer may have slight variations in how they interpret and handle fault codes, so it is always recommended to consult the official repair and service manual for the specific model and year of your vehicle.