The P0574: Cruise Control System – Vehicle Speed Too High refers to a fault where the cruise control system detects that the vehicle’s speed is higher than expected. This could be caused by a faulty vehicle speed sensor, wiring issues, or a malfunctioning cruise control module, leading to incorrect speed readings.
P0574 – Quick Overview
| Code | Information |
|---|---|
| Meaning | P0574: Cruise Control System – Vehicle Speed Too High |
| Is it serious? | Yes, as it can lead to incorrect speed regulation or disengagement of cruise control. |
| Possible causes | – Faulty vehicle speed sensor – Wiring issue – Faulty cruise control module |
| How to diagnose? | – Test vehicle speed sensor – Inspect wiring and connectors – Test cruise control module |
P0574 Meaning
The P0574 code indicates that the cruise control system is detecting a higher-than-expected vehicle speed. This may be due to a faulty vehicle speed sensor, wiring problems, or an issue with the cruise control module. If not addressed, this can prevent the cruise control system from functioning properly or cause the system to disengage when the vehicle is moving too fast.
Step-by-step diagnostic guide
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to check for other related codes that could provide additional information. | OBD-II Scanner |
| Test the Vehicle Speed Sensor | Test the vehicle speed sensor to ensure it is accurately detecting the vehicle’s speed. | Multimeter, Speed Sensor Tester |
| Inspect Wiring and Connectors | Inspect the wiring and connectors leading to the vehicle speed sensor for damage or wear. | Flashlight, Multimeter |
| Test the Cruise Control Module | Verify the cruise control module is functioning correctly and sending appropriate signals. | Diagnostic Tool, Multimeter |
| Clear the Code and Test | After repairs, clear the code using the OBD-II scanner and test the cruise control system. | OBD-II Scanner, Vehicle Manual |
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Hi, I am Juraj “Yuri” Lukacko. I got frustrated by unhelpful and scammy mechanics, so I decided to learn everything about car diagnostics myself. I test dozens of new car diagnostic tools every month along with learning new strategies to fix and customize cars. About Juraj Lukacko (Yuri)