OBD-II Code
P0574
Severity
Not yet reviewed
Nobody on our side has assessed this code yet, so we are not going to guess at how serious it is.
Can you drive it
We cannot say
Treat it as unknown until a shop reads it with live data. If the check-engine light is FLASHING, stop driving as soon as it is safe to — that means an active misfire, whatever the code.
Indicative cost (USD)
$50–$450
From this code's diagnostic notes. Varies by vehicle, diagnosis, parts, and local labor. This is not a repair quote.
P0574 is a generic cruise control system fault that the PCM sets when it detects an unexpected state on the cruise input network, most commonly disagreement between the brake switch, the cruise on/off switch, and the set/resume input.
How a shop works this
Work from evidence to part, not the other way round. A code names a circuit or a symptom; it does not name the part that failed.
Note every code that is set, not just this one.
Codes that appear together usually narrow the cause faster than any one of them read alone.
Read the freeze frame — the conditions the fault was recorded under.
Cold or warm, idle or load, road speed and engine speed. A fault that only appears cold is a different fault from one that only appears under load, even with the same code on the scanner.
Confirm the fault is current rather than history.
Clear the code and see whether it returns under those same conditions. A code that does not come back may have been logged during a repair, a flat battery, or a bad connection that has since been disturbed.
Then follow the diagnostic notes further down this page, in the order they are written.
They are written in the order a shop works this code, cheapest checks first. Where they name a component, inspect its wiring and connector before replacing it.
If the code comes back after a repair, the underlying fault is still there. That is the point to bring in a scanner with live data and freeze-frame, or a shop that has one.
Common symptoms
- Check engine light
Read the full diagnostic procedureP0574 is a generic cruise control system fault that the PCM sets when it detects an unexpected state on the cruise input network, most commonly disag…
P0574 is a generic cruise control system fault that the PCM sets when it detects an unexpected state on the cruise input network, most commonly disagreement between the brake switch, the cruise on/off switch, and the set/resume input.
Start cheapest
clear the code and try to engage cruise on a flat road above the minimum activation speed; if it refuses to set, scan live data for Brake Switch, Cruise On/Off, and Cruise Set PIDs and watch each one toggle as you operate the controls. A stuck-on brake switch input will set P0574 because cruise cannot engage with brakes apparently applied; this is the single most common root cause. Caveat: do not replace the cruise control module or ECM until the brake switch input has been verified clean on a scan tool, because the brake switch is the upstream input and a bad switch will keep setting P0574 forever.
Vehicle-specific patterns2007 to 2013 GM trucks and SUVs set P0574 as a companion code to P0572 because the integrated brake switch feeds both circuits.
- 2007to 2013 GM trucks and SUVs set P0574 as a companion code to P0572 because the integrated brake switch feeds both circuits.
- 2005to 2010 Ford F-150, Expedition, and Lincoln Navigator with the 5.4L Triton suffer from the cruise control deactivation switch on the master cylinder failing and triggering P0574, which was part of the massive Ford cruise-switch recall over fire risk.
- 2008to 2014 Subaru Legacy, Outback, and Forester set P0574 when the brake light switch contacts oxidize, particularly in cold climates.
- 2009to 2015 Honda Pilot and Odyssey with the steering-wheel cruise buttons exhibit clockspring wear that sets P0574 intermittently when the wheel is turned.
Estimated repair$50 to $450.
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