P0566 OBD Error Code: Problem & Solutions

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Defective and damaged cruise control switch, ineffective connectors, defective ECM are a few problems which causes the P0566 error code. The body control module manages the cruise control system. The body control module which manages the driver input to the cruise control system sends its request to the powertrain control module. If an invalid input is received by the cruise control “Off” switch, the error code P0566 will be set.

Unless and until it receives a signal to cancel the fixed speed, the cruise control system will keep the vehicle moving at a fixed speed. The battery voltage will be applied to the Engine control module, when you turn on the main switch, with the vehicle in running mode. If the vehicle is in a state and if a signal from the control switch is sent to the ECM, the fuel injection will enable the car to move steadily. You will also see that the cruise indicator lamp, lights up in the meter assembly while operating the system. OBD II code will be set up if the switch is not up to factory specifications.

What causes this problem with the Cruise Control Off Signal Malfunction?

• Defective or damaged cruise control switch and buttons.
• Improper and ineffective connectors with electrical connections.
• Wires in the cruise control harness is chafed or defective causing a short, resistance, etc.
• Presence of fluid in the cruise control switch like coffee, soda, juice, etc.
• Defective ECM.
• Faulty cruise control module.
• Issues in the BCM (Body Control Module)
• Parts that are overheated causes malfunction.

1. Cruise Control Switch - Contamination of any fluid like coke or a broken switch has to be repaired and fixed.
2. Body Control Module - Any issue in the body control module has to be visually inspected and the problem has to be rectified.
3. Cruise control system - Are there any defective or damaged component in the system? If your answer is yes, get them fixed immediately.
4. Engine Control Module - Engine control module is essential as the battery voltage will be applied to it. If you come across any problem, resolve them immediately.
5. Fuel Injection - Check if there are any damages in the valves of the fuel injector. If so, replace them with the right parts from parts Avatar.
6. Cruise Control Connectors - if the wires of the connectors are damaged or if there is an opening, a short to circuit will occur. Get them fixed instantly.
7. Cruise control fuses - Overheated parts may malfunction and blow the fuse. Check and replace them as specified by the manufacturer.
8. Cruise Control Straps - Straps in your vehicle should help the components stay intact. Repair and replace the straps if any damage is found. 

Willing to know some common symptoms of OBD Code P0566? Your wish is our demand. Have a look at them below:

Common Symptoms

• No occurrence of cruise control light in the dash or it is steady.
• Cruise control is not operable.
• Unable to set a desired speed in the cruise control or the speed is intermittent.
• Few functions like resume, set, +, -, etc. are non- operative in the cruise control system.
• Inconsistent functioning of a few commands.

We have listed out some ways which would help you to correct the occurrence of OBD Code P0566. They are mentioned here as follows:

• Replacing the faulty cruise control switch.
• Fixing the shorts or openings in the circuits of the cruise control buttons.
• Fixing the short or open electrical wire in the circuit.
• Fixing the damages in the cruise control system connectors.
• Changing the blown fuses and fixing the issue which caused the problem.

There is no need to get strained if your OBD Code is still flashing up as we are here at your service. Have a look at our superior variety of Cruise Control Switch, Body Control Module, cruise control system, Engine Control Module, fuel injection, connectors, blown fuses, straps and many more. Now all your problems would vanish within no time.

If you want to easily diagnose this fault code, then all you have to do is to follow the steps which are mentioned below:

• Basic step #1. Carefully check the cruise control switch or module. A few buttons may go missing, juice like cola would have been poured which causes the button to stick in one position, loose electrical connections. Triple check if the buttons are freely moving without any contamination or damaged particle stuck to the switch. If needed, you can record all the cruise functions like abnormality and malfunctioning.
• Basic step #2. Do you see the cruise control light in the instrument cluster when you manually activate it? If your answer is no, verify for fuses in the circuit. This information is also made available in the service manual of your vehicle. Also, try replacing the blown fuses with new ones.
• Basic step #3. If you want to access the joints to the cruise control switch you have to remove unwanted parts like steering column shroud, airbag module in steering wheel, and so on. You must have a proper wiring harness, in order to find the specific wire which has the faults. It is always a good idea to gather information before you obtain a proper service.
• Basic step #4 Make sure that your ABS (anti-lock brakes) system is in good working order and there are no ABS light on in the dash. ABS use several sensors like speed sensors that, the malfunctioning, can fool the vehicle’s computer into thinking that the vehicle is moving faster or slower than the real speed.

Common Mistakes When Diagnosing the P0566 Code

• Body control module is defective.
• Cruise control master switch is defective.
• Problem with wiring.