P0592 Cruise Control Multi-Function Input B Circuit Low

P0592 – OBD-II Trouble Code Technical Description

Cruise Control Multi-Function Input B Circuit Low

What does the fault code mean P0592?

Code P0592 is a diagnostic trouble code that applies to OBD-II equipped vehicles such as Mazda, Alfa Romeo, Ford, Land Rover, Jeep, Dodge, Chrysler, Chevy, Nissan and others. It is connected to the multifunction cruise control switch and may have different meanings depending on the manufacturer.

This code indicates a problem with the cruise control system, which is designed to maintain a set vehicle speed without constantly operating the accelerator pedal. In most cases, the P0592 code indicates a problem with the multifunction switch on the steering column, which is used to control the cruise control.

To accurately diagnose and resolve the problem with this code, it is important to refer to the service manual for the specific make and model of your vehicle. It is recommended to check the electrical components and wires in the cruise control circuit, as well as the multi-function switch for damage, corrosion or breaks. Once the problem is resolved, the original code should be reset using an OBD-II scanner and a test drive of the vehicle should be performed to ensure that the problem is resolved.

Possible reasons

Code P0592 may occur for the following reasons:

1. Faulty speed control switch.
2. Damaged speed control switch wiring harness.
3. Poor electrical connection to the speed control switch circuit.
4. Blown cruise control fuses.
5. Defective cruise control switch.
6. Faulty cruise control/speed connector.
7. Problems with the electronic control module.

These factors can cause the P0592 code to appear and must be checked and corrected for the cruise control system to function properly.

What are the symptoms of a fault code? P0592?

Symptoms of a P0592 trouble code include:

1. Abnormal vehicle speed when cruise control is activated.
2. Cruise control malfunction.
3. Cruise control lamp illumination.
4. Inability to set cruise control to desired speed.

Also, in this case, the “Engine service soon” lamp may or may not light up.

How to diagnose a fault code P0592?

Fixing code P0592 may require the following steps:

1. Replacing the speed sensor.
2. Replacing the cruise control sensor.
3. Check and, if necessary, replace wiring and connectors.
4. Replacement of blown fuses.
5. Troubleshooting or reprogramming engine control module (PCM) problems.

For diagnosis and repair, follow these steps:

1. Use an OBD-II scanner and digital volt/ohm meter for diagnostics. Check wiring and connectors for damage, replace them if necessary.
2. After repairing the system, recheck its operation. If all components, including fuses, are in good condition, connect a scan tool to record codes and freeze frame data.
3. Clear the codes and test the system by driving the vehicle to see if the code returns. This can help determine whether the problem is persistent or occasional.
4. If you suspect a faulty cruise control switch, check its resistance using a digital volt/ohmmeter. Replace switches if necessary.
5. If you do not have experience in ECM repair, it is better to leave this task to professionals, as ECM repair can be a complex and expensive process.

Diagnostic errors

Common mistakes to avoid when diagnosing and repairing a P0592 code:

1. After replacing components, always check the condition of the fuses. Sometimes multiple components may be incorrectly replaced due to a simple blown fuse.
2. Replacing the cruise control switch or wiring without first diagnosing it may be ineffective and unnecessary. Run a thorough diagnostic to see what exactly is causing the error.
3. Repairing the vacuum lines to the throttle servo may be necessary if there are problems with the vacuum system, but make sure other components of the system are also in good working order.
4. Replacing the PCM is a serious repair that should be left to a professional unless you have experience in this area. Replacing the PCM incorrectly can lead to even more problems.
5. Before replacing the wiring and connector, make sure that these are the components causing the error. Do this only after a thorough diagnosis.

How serious is the fault code? P0592?

What is the severity of the P0592 trouble code? In most cases, this code does not pose a serious threat to the safety or performance of the vehicle. However, it is worth remembering that problems with electrical components can worsen over time. The low severity of this error means that drivers can continue to use the vehicle, but the cruise control system is not effective enough.

It is important to note that the severity of the problem may vary depending on the specific situation and vehicle model. In any case, for accurate diagnosis and repair, it is always recommended to contact professionals. Regular vehicle maintenance is also important to keep it running reliably.

What repair will help eliminate the code? P0592?

To resolve OBD code P0592:

1. Replace the speed sensor. Cruise control depends on the speed sensor to function properly, so replace it if it is faulty.
2. Replace the speed sensor connector. Damaged connectors may cause the system and PCM to malfunction, so replace them.
3. Replace the cruise control switch. A damaged switch can also cause cruise control problems, so replace it.
4. Replace the cruise control connector. Replacing a damaged connector will ensure the system functions correctly.
5. Replace the cruise control fuses. If the fuses are blown, this may be a quick fix.
6. Reprogram the PCM and, if necessary, replace faulty PCM components. This may also be the reason why the OBD code is retained due to system issues.
7. Use factory-grade diagnostic tools to accurately diagnose and locate the problem.

Be sure to purchase quality parts and tools to repair your car.

What is P0592 Engine Code [Quick Guide]

P0592 – Brand-specific information

Trouble code P0592 can apply to different makes of vehicles, and its meaning may vary slightly depending on the manufacturer. Here are some car brands and their interpretations for code P0592:

1. Ford – “Cruise control speed sensor input circuit low signal.”
2. Chevrolet – “Cruise control system control B – low level.”
3. Nissan – “Cruise control system control B – low level.”
4. Dodge – “Cruise control system control B – low level.”
5. Chrysler – “Cruise control system control B – low level.”

Please note that the exact meaning of the P0592 code may vary depending on the model and year of the vehicle. For more accurate information and diagnostics, it is recommended that you consult the service manual for your specific vehicle make and model.