P0565 Fault Code

Cruise Control On Signal Malfunction

• What does that mean?
• Symptoms
• Causes
• Solutions

The P0565 fault code indicates a malfunction in the cruise control 'On' signal system. This code typically appears when the vehicle's engine control module (ECM) detects that the signal responsible for activating the cruise control system is either missing or incorrect. An issue in this signal can affect the functionality and safety of the vehicle's cruise control system, leading to erratic or non-functioning cruise control.

What are the symptoms of the P0565 code?

When the P0565 code is present, drivers may notice:

• The cruise control system failing to engage properly.
• Inability to maintain set speeds while cruise control is active.
• Warning lights on the dashboard related to cruise control or engine performance.
• Erratic acceleration behavior when attempting to use cruise control.

What causes the P0565 code?

Several factors can lead to the triggering of the P0565 code, including:

• Faulty cruise control switch or pedal position sensor.
• Wiring issues, such as damaged or corroded connectors.
• Problems with the engine control module itself.
• Malfunction of related components, such as the throttle position sensor.
• Electrical issues, like short circuits or open circuits in the cruise control system wiring.

How to fix P0565?

To resolve the P0565 fault code, the following steps are typically recommended:

• Conduct a thorough inspection of the cruise control switch and wiring for signs of damage or wear.
• Test and, if necessary, replace the cruise control switch and associated sensors.
• Check the vehicle's wiring harness for shorts, opens, or corrosion, and repair as needed.
• Verify that the ECM is functioning correctly and reprogram or replace it if it is faulty.
• Clear the fault code and perform a test drive to verify that the cruise control system operates correctly.