P0574 Fault Code

Cruise Control System - Vehicle Speed Too High

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

The P0574 fault code indicates an issue with the cruise control system, specifically that the vehicle's speed is exceeding normal operational limits. This can lead to unexpected acceleration when cruise control is engaged, creating a potentially hazardous driving situation.

• The cruise control system is designed to maintain a set speed without the driver needing to keep their foot on the accelerator.
• When the vehicle speed is too high, it can trigger this fault code, disrupting the normal function of the system.

What are the symptoms of the P0574 code?

Symptoms associated with the P0574 fault code may include:

• The cruise control system failing to engage or disengage properly.
• Unexpected acceleration when cruise control is activated.
• Vehicle not maintaining the set speed, either accelerating or decelerating erratically.
• Warning lights on the dashboard related to the cruise control system.
• Potentially feeling a lack of control over the vehicle's speed.

What causes the P0574 code?

There are several potential causes for the P0574 fault code:

• A malfunctioning vehicle speed sensor, which inaccurately reports speed data to the cruise control module.
• Worn or damaged wiring or connectors in the cruise control system.
• An issue with the throttle position sensor, affecting speed regulation.
• Malfunctioning cruise control module that fails to interpret speed signals correctly.
• A stuck throttle due to physical obstruction or mechanical failure.

How to fix P0574?

To resolve the P0574 fault code, consider the following steps:

• Inspect and, if necessary, replace the vehicle speed sensor to ensure accurate speed readings.
• Check for any damaged wiring or connectors related to the cruise control system and repair or replace as needed.
• Test the throttle position sensor for proper functionality and replace if defective.
• Ensure that the cruise control module is operating correctly and reprogram or replace it if malfunctions are found.
• Clear the fault code after making repairs and perform a test drive to ensure the issue is resolved.