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Cruise is a diagnostic trouble code (DTC) for "Control Multi-Function Input "A" Circuit Diagnostic Trouble Code (DTC) P0564". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
The P0564 code means that the powertrain control module (PCM) has identified an electrical fault in the cruise control multi-function input circuit.
The P0564 code is a generic OBD-II code that occurs when the PCM perceives that the vehicle's speed is unable to be controlled. It will cue a self-test of the cruise control system, and create this code if the test finds that there is irregular voltage resistance in the cruise control's multi-function input circuit.
There can be several reasons for this code, including:
The P0564 code is often recorded in vehicles in which the cruise control is no longer allows the operator to set the vehicle's speed controls. There may also be a check engine indicator, and blown fuses are often a sign of a problem.
P0564 is diagnosed with an OBD-II scanner, and it will be necessary to look through the freeze frame data to see when the code appeared. The mechanic should then reset the fault codes and do a road test to see if the system works and/or the code reappears.
If so, then the mechanic needs to perform a visual inspection on all of the related electrical components, including connectors, wires and straps. Anything in need of repair or replacement must be addressed, and the system retested. If the code still appears, it will require the switch to be replaced.
One of the key mistakes made during diagnosis and repairs for P0564, or related codes, is the failure on the part of the technician to check for blown fuses after the replacement of any components. It is not unusual for different components in the system to be replaced, wrongly, when the only repair needed after the initial component replacement was to replace fuses.
Although the P0564 code will not prevent the car from operating safely and effectively, it can be the sign of a more serious issue. This is because one of the symptoms of this issue is blown fuses, which can be a sign of a much more severe electrical problem.
To overcome the P0564 code, the following steps are needed:
When testing the circuit resistance, leave the cruise control module and PCM disconnected, and replace any switches as needed.
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