What causes fault code P0565?

• Most likely: Faulty cruise control switch (internal contact failure or stuck button) • Likely: Damaged clockspring (spiral cable) behind the steering wheel causing intermittent open circuits • Possible: Wiring issues, such as short to ground, short to power, or corroded connectors • Rare: Faulty Steering Wheel Module (SWM) or ECM software glitch

Powertrain (Engine & Gearbox)Standard EOBD

P0565 - Cruise Control ON Signal Circuit Malfunction

Q: What are the symptoms of fault code P0565?

• Cruise control system cannot be engaged • Check Engine Light (MIL) may be illuminated • Cruise control indicator light flashes or fails to turn on • Potential failure of other steering wheel controls if the clockspring is the root cause

Q: How do you fix fault code P0565?

STEP 1: Visually inspect the cruise control switches for physical damage or sticking. Clean with specialized electronics cleaner if necessary. STEP 2: Check all relevant fuses for the cruise control and body control systems. STEP 3: Use a scan tool to monitor Live Data. Observe the 'Cruise Control On Switch' status while pressing the button. If the state doesn't change, proceed to electrical testing. STEP 4: Test the clockspring and wiring for continuity. Measure the resistance of the switch assembly (specs vary, but typically range from 0 to 5V or specific Ohm values per button). Check for consistent signals while turning the steering wheel. STEP 5: Replace the switch assembly or clockspring if found defective during testing.

Last updated:1 February 2026

Related:Cruise Control Switch, Clockspring (Spiral Cable), Engine Control Module (ECM), Body Control Module (BCM), Steering Wheel Module (SWM)

System

Powertrain (Engine & Gearbox)

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Technical Description

P0565 signals that the Engine Control Module (ECM) or Body Control Module (BCM) has detected an invalid voltage signal from the cruise control 'ON' switch circuit. Most modern cruise control systems use a resistive ladder network where each button press results in a specific voltage drop. If the ECM perceives a voltage that is inconsistent with factory specifications (e.g., stuck button, open circuit, or short to voltage), the diagnostic routine will flag P0565 and disable the cruise control system for safety reasons.

Possible Causes

Faulty cruise control switch (internal contact failure or stuck button)

Damaged clockspring (spiral cable) behind the steering wheel causing intermittent open circuits

Wiring issues, such as short to ground, short to power, or corroded connectors

Faulty Steering Wheel Module (SWM) or ECM software glitch

Symptoms

Cruise control system cannot be engaged

Check Engine Light (MIL) may be illuminated

Cruise control indicator light flashes or fails to turn on

Potential failure of other steering wheel controls if the clockspring is the root cause VIDA.

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P0565 - Cruise Control ON Signal Circuit Malfunction

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P0565 - Cruise Control ON Signal Circuit Malfunction

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