P0576 Fault Code

Cruise Control Input Circuit Low

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

The P0576 fault code indicates a problem with the cruise control input circuit being low. This means that the voltage level from the cruise control system is not as expected. It can affect the functionality of the cruise control feature in the vehicle, which is designed to maintain a specific speed without the driver having to keep their foot on the accelerator pedal.

What are the symptoms of the P0576 code?

Common symptoms associated with the P0576 fault code may include:

• Inability to engage cruise control.
• Cruise control turning off unexpectedly.
• Dashboard warning lights illuminated (such as the cruise control indicator light).
• Erratic speed control if the system occasionally engages.

What causes the P0576 code?

The low input circuit issue can arise from various factors, including:

• Faulty cruise control switch or actuator.
• Damaged wiring or connectors in the cruise control system.
• A malfunctioning brake light switch, which can affect the cruise control operation.
• Issues with the engine control module (ECM) or powertrain control module (PCM) not properly detecting inputs.

How to fix P0576?

To resolve the P0576 fault code, a thorough diagnosis is necessary. Steps may include:

• Inspecting the cruise control switch for faults and possible replacement.
• Checking the wiring and connectors for damage or corrosion.
• Testing the brake light switch to ensure it operates correctly.
• Scanning the vehicle's computer for additional trouble codes.
• Repairing or replacing damaged components as identified during the diagnosis.