P0569 OBD-II Trouble Code: Cruise Control Coast Signal Malfunction

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Cost of diagnosing the P0569 code

P0569 is a diagnostic trouble code (DTC) for "Cruise Control Coast Signal Malfunction". 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.

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P0569 code definition

The P0569 code indicates that the PCM detected a malfunction with the “Coast” command in the cruise control system.

What the P0569 code means

When the cruise control is activated in most vehicles, the PCM works with the cruise control system to control the speed. If there appears to be an issue with the cruise control function, the PCM will run a self-diagnostic test of the entire cruise control system. If an abnormal voltage reading appears in the cruise control coast signal circuit, the PCM will store the P0569 code.

What causes the P0569 code?

The most likely cause of an abnormal voltage/resistance level in the cruise control coast signal circuit is a failed cruise control switch.

Other causes may include:

  • Short circuits or open circuits in the cruise control buttons
  • Shorted or open electrical wiring
  • Damaged cruise control system connectors
  • Blown fuses, which may indicate a more serious issue
  • Liquid spilled or dirt/debris build up on the cruise control components

What are the symptoms of the P0569 code?

When the P0569 code is stored, the vehicle owner may not be able to utilize the cruise control function, and will likely notice the Check Engine lamp being illuminated.

How does a mechanic diagnose the P0569 code?

After an OBD-II scanner detects the P0569 code, a technician should begin with a visual inspection of all the electrical components of the cruise control system, like wiring and connectors. Any damaged elements should be replaced, reconnected, or repaired as necessary. They should then clear the code and retest the system, checking that the cruise control works as it should, and that the code does not reappear.

If the code reappears, it is likely a faulty cruise control switch. After replacing the switch, the mechanic should again clear the code and retest the system, and then work their way through other repairs until the fault causing the issue is found.

Common mistakes when diagnosing the P0569 code

The most common misdiagnosis related to the P0569 code is replacing components without checking for blown fuses. Blown fuses can cause this code to be stored, and should be inspected before replacing any major parts.

How serious is the P0569 code?

If the P0569 code is being detected, a vehicle will still be drivable. The cruise control may not be usable, but this should not affect any other function of the vehicle. However, if a fuse is blown, there may be some other minor electrical issues, which may lead to larger repairs in the future. While this issue is not an emergency, it should be dealt with in a reasonable time. While this code is stored in the PCM, the vehicle may not be able to pass the OBD-II emissions test.

What repairs can fix the P0569 code?

There are many ways that a technician can address a P0569 code detection. They include:

  • Replace a failed cruise control switch.
  • Repair short circuits or open circuits in the cruise control buttons.
  • Repair shorted or open electrical wiring.
  • Repair damaged cruise control system connectors.
  • Replace blown fuses, and repair the underlying issue that caused the blown fuse.

Need help with a P0569 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6220.

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