Cruise Control On Signal Malfunction
The P0565 code indicates that the powertrain control module (PCM) has detected a malfunction in the cruise control 'ON' signal circuit. This signal is typically sent from the cruise control switch to the PCM when the driver activates the system. The issue may be due to a faulty switch, wiring problems, or a PCM failure. When this code is set, the cruise control system is usually disabled.
01. Most Common Causes
- Faulty cruise control switch
- Open or shorted wiring in the cruise control circuit
- Corroded or loose electrical connectors
- Failed PCM (rare)
02. Symptoms You Will Notice
- Cruise control inoperative
- Cruise control light on dash may not illuminate
- Engine Check Light illuminated
03. Step-by-Step Diagnosis
Step 1: Use a scan tool to confirm the P0565 code and check for any related codes.
Step 2: Visually inspect the cruise control switch and wiring for damage or corrosion.
Step 3: Test the cruise control switch continuity with a multimeter.
Step 4: Check the signal voltage at the PCM connector for the cruise control input.
Step 5: Repair or replace any faulty components, then clear the code and test drive.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
Yes, it is safe to drive, but the cruise control will not work. The code does not affect engine performance or safety systems.
How much does it cost to fix?▼
Typically between $50 and $150 for diagnosis and repair, depending on the cause. A switch replacement is usually under $100.