OBD-II code · Powertrain (generic)
P0574 Cruise Control System Vehicle Speed Too High
The cruise control sees actual vehicle speed exceed the set-speed by more than the diagnostic margin (typically going downhill or with throttle override). Persistent oversize means the system cannot bring speed down - either an actuator fault, brake-blending failure, or driver kick-down stuck.
Is it safe to drive with P0574?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyCruise servo stuck driving throttle
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Cruise Control Servo, Brake Blending
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.