P0574
Cruise Control System - Vehicle Speed Too High
- Severity
- Low
- Driving
- No driving restriction
Cruise control has been cancelled, or refused, because the vehicle is going faster than the system is permitted to control. This is the system working as designed rather than a fault - though it can also appear if the module is reading speed incorrectly.
Possible causes
- CommonVehicle driven above the cruise control's working range
- CommonSpeed increasing on a descent beyond what cruise can hold back
- PossibleWrong tyre or wheel size making the module read speed incorrectly
- PossibleFaulty vehicle speed sensor
- RareCruise control module fault
What you might notice
- Cruise control cancelling at high speed
- Cruise control refusing to engage
- Check engine light on
- No effect on ordinary driving
What to check, in order
- Consider whether the speed recorded is plausible. If it is, this is the system doing its job.
- Check whether non-standard wheels or tyres have been fitted, which shifts every speed calculation.
- Check for vehicle speed sensor codes stored alongside.
- Note that cruise control cannot hold speed down a steep hill - it has no way of braking on most vehicles, so it cancels instead.
- Clear the code and see whether it returns in normal driving.
Read this code from your own car
Plug an ELM327 adapter into the OBD-II port under the dashboard. Pin16 reads every stored, pending and permanent code, explains each one like this page does — offline, with no account — and shows what the car recorded when the fault was set.
Where this code sits
P00xxP01xxP02xxP03xxP04xxP05xxP06xxP07xxP08xxP09xxP0AxxP0BxxP0CxxP0DxxP0ExxP0FxxP10xxP11xxP12xxP13xxP14xxP15xxP16xxP17xxP18xxP19xxP1AxxP1BxxP1CxxP1DxxP1ExxP1FxxP20xxP21xxP22xxP23xxP24xxP25xxP26xxP27xxP28xxP29xxP2AxxP2BxxP2CxxP2DxxP2ExxP2FxxP30xxP31xxP32xxP33xxP34xxP35xxP36xxP37xxP38xxP39xxP3AxxP3BxxP3CxxP3DxxP3ExxP3Fxx
Vehicle speed control, idle control and auxiliary inputs
P0500P0501P0502P0503P0504P0505P0506P0507P0508P0509P0510P0511P0512P0513P0514P0515P0516P0517P0518P0519P0520P0521P0522P0523P0524P0525P0526P0527P0528P0529P0530P0531P0532P0533P0534P0535P0536P0537P0538P0539P0540P0541P0542P0543P0544P0545P0546P0547P0548P0549P0550P0551P0552P0553P0554P0555P0556P0557P0558P0559P0560P0561P0562P0563P0564P0565P0566P0567P0568P0569P0570P0571P0572P0573P0574P0575P0576P0577P0578P0579P0580P0581P0582P0583P0584P0585P0586P0587P0588P0589P0590P0591P0592P0593P0594P0595P0596P0597P0598P0599