P0577 Fault Code

Cruise Control Input Circuit High

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

The P0577 fault code indicates that there is an issue with the cruise control input circuit, specifically that the signal is higher than expected. This typically means that there may be a malfunction in the system where the cruise control is not able to receive the appropriate input signals, potentially leading to unintended acceleration or issues engaging the cruise control feature.

What are the symptoms of the P0577 code?

Symptoms associated with P0577 may include:

• Inability to activate cruise control
• Cruise control may engage unexpectedly
• Unusual acceleration or deceleration behavior
• Dashboard warning lights, such as the cruise control indicator or check engine light.

What causes the P0577 code?

Common causes of the P0577 code can include:

• Faulty cruise control switch
• Short circuits in wiring or connectors
• Malfunctioning throttle position sensor
• Damaged or corroded wiring harness
• Issues with the engine control module (ECM) or its programming.

How to fix P0577?

To resolve the P0577 fault code, steps may include:

• Inspecting and repairing or replacing any damaged wiring or connectors
• Testing the cruise control switch for proper operation
• Checking the throttle position sensor for functionality
• Clearing the code and conducting a test drive to see if it reoccurs
• In some cases, reprogramming or replacing the ECM may be required.