P0596 OBD Error Code: Problem & Solutions

<<See All OBD Codes

The error code P0596 would start appearing when there is an issue with the cruise control servo control circuit. P0596 trouble code can be defined as Cruise Control Servo Control Circuit High.

Want to learn something more about this fault code?

This trouble code is generic, which would mean that it can apply to all the vehicles which are equipped with the OBD-II or the vehicles which are made since 1996 up to the present. The specifications on the definition, the troubleshooting steps as well as repairs can always vary from one vehicle make to another. This can happen because of a lot of reasons and the mechanic should diagnose the specific cause for this code.

What causes this problem with the Cruise Control Servo Control Circuit High?

• Problems related to wiring
• The engine control module might be defective
• The cruise control servo might have some defects
• There can be broken/stuck/disconnected/mis-adjusted cruise control servo cable
• Module water intrusion
• Defaults in the connector

1. Cruise Control Switch - A faulty Cruise Control Switch can be troublesome. You can always rely on us as we have best auto parts for our customers.
2. Coolant Temperature Sensor - If everything is alright with PCM, then there is surely some defect in Coolant Temperature Sensor. Get it replaced before the situation gets worse.
3. Engine Control Module - P0596 code can display due to some issues in the Engine Control Module. So it is very important to replace the Engine Control Module with us at equitable prices.
4. Cruise Control Relay - Do you remember when was the last time you got your car Cruise Control Relay checked up? A dirty Cruise Control Relay can cause a lot of issues like displaying P0596 code.
5. Throttle Position Sensor - Poor Throttle Position Sensor can cause a lot of difficulties, so why not get it replaced at time?
6. Powertrain Control Module - Are there some faults in your Powertrain Control Module? Don’t waste time and get them replaced or else P0596 code can turn up.

There could be countless symptoms which that would accompany with this fault code. Willing to know some common symptoms of OBD Trouble Code P0596? Your wish is our demand. Have a look at them below:

Common Symptoms

• Vehicle speed stuck
• Vehicle speed limited with cruise control active
• Cruise control inoperative
• The cruise control operation might be erratic
• There can be Inaccurate vehicle speed setting when compared to desired or set speed
• Specific cruise control functions might be malfunctioning

Looking out for some ways with the help of which you can correct this fault code? Then you have arrived at the correct place. We are here to help you out, so you must check out the steps mentioned below as follows:

• If there are some faults in the cruise control servo control unit, then it should be replaced
• Replace the blown fuses
• You can always repair or replace the cruise control servo control wiring that is frayed, broken, or shorted
• Make sure to restore the cruise control servo control connectors that are damaged or corroded
• It is very important to replace the faulty cruise control switch

Don’t get tensed if you are still facing any of these issues as we care for our customers and that’s why we offer a good range of Fusion, Wheel Bearing, Oil Pump, Idle Air Control Valve, Brake Light, Rocker Arm, Starter Relay, Automotive Fuses, 15 Amp Fuse and a lot more. We are sure that now all your issues would be resolved.

It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P0596 code to be stored:

Advanced diagnostic steps become very vehicle specific and may require the appropriate advanced equipment and knowledge to perform accurately. We include basic steps below but refer to a vehicle year/make/model/powertrain specific repair guide for specific steps for your vehicle

Step 1

The cruise control servos are mounted in the engine compartment somewhere

Most times, they are in close proximity to the throttle body, after all they do control vehicle speed using this

Now once it is located, you must do a general visual inspection

Look at the cable, check for fraying, kinks, corrosion or any signs of malfunctioning

If the servo cable does not move freely when controlling the throttle, the ECM could interpret it as a performance issue

It's important to check all the vacuum lines running to the servo itself

Any cracked or deteriorated lines should be taken as a sign of your vacuum system's health so it is recommended to replace all of the vacuum lines involved as they are inexpensive and could save you from problems in the future

Step 2

On to the electrical side of things, verify the connector on the servo

Any broken tabs or loose connections should be repaired

The harness may be running through tight areas and/or moving parts, so be aware of any chafing areas that could cause an issue and repair any broken/ damaged wires

Step 3

It all depends on your OBD2 scan tool capabilities, you can potentially monitor the servo's operation with it connected to the vehicle

Sometimes you may be given percentages or maybe electrical values

Either way you can compare the values to its physical operation by watching it under the hood, with the wheels off the ground

This is an old procedure and may cause issues especially when talking about more modern vehicles

That is the reason why you must always ensure any diagnosing/ repair procedures which are recommended by your vehicle's manufacturer

If you neglect to do your research here, you could easily damage other vehicle components

Common Mistakes When Diagnosing The P0596 Code

• Most of the times the technicians simply overlook the blown fuses which can be the most common mistake
• First of all, the fuses should be inspected properly to ensure if they are working properly and after that the other components should be checked and replaced
• Replacing the correct components unnecessarily would simply be a waste of time as well as money and at the same time the issue would not be resolved