P0574 Code Meaning and Next Steps

First checks take 10 to 15 minutes for the first checks. No special tools are usually needed for the first checks.

Can you keep driving?

Stop driving if any of these apply

!The engine starts running much worse, stalls, or the warning light flashes.
!The vehicle loses power sharply or the electrical system is acting unstable while the code is active.

If the light is steady and the vehicle still drives normally: Often yes for a short time, but it should not be ignored.

What to check first

Step-by-step checks

1
Free - no tools
Check the speed at which the code set and whether the cruise system behaved normally otherwise
2
Free - no tools
Compare the vehicle speed reading in scan data with the actual speedometer if possible
3
Basic tool needed
Look for related wheel-speed or vehicle-speed codes that may point to the signal side
4
Basic tool needed
If the code appeared after module work or tire changes, note that history before replacing parts
5
Basic tool needed
Confirm the cruise system is not being asked to operate outside its normal range for that vehicle

If the code returns

-If the speed signal is wrong, diagnose that side before assuming the cruise switch failed.
-If the code only appears at an actual high road speed, the system may simply be behaving as designed.
-If the code returns with normal speed readings, the cruise module or control logic deserves more attention.

Background

What this code means

P0574 is a generic OBD-II cruise-control speed-limit code.

The ECU is seeing the vehicle speed as too high for cruise operation, or it thinks the cruise system should not be active at that speed.

This may be a real speed-limit event or a signal problem depending on when it sets.

Diagnosis

Common causes

Most common

Vehicle speed signal issue

The ECU may not be reading road speed correctly.

Common

Cruise module logic fault

The cruise system may be rejecting a normal operating condition.

Common

Wheel-speed or ABS input problem

A shared speed input can affect cruise operation.

Possible

Wiring or connector issue

A poor connection can make the speed input look wrong.

Avoid these mistakes

What not to do

xDo not replace parts before checking the battery, connectors, fuses, and switch inputs that feed the circuit.
xDo not ignore drivability changes just because the code sounds like a switch or voltage issue.

Parts

Parts that may need replacing

PartTypical costNotes

Vehicle speed sensor or ABS input repair$40-$250Relevant when the speed signal itself is wrong.

Cruise module$120-$500Useful when the module logic is the problem.

Connector or wiring repair$20-$160Worth checking if the signal path is unstable.

Related OBD codes

P0565

P0565 usually means cruise control on signal malfunction.

P0566

P0566 usually means cruise control off signal malfunction.

P0575

P0575 usually means cruise control input circuit malfunction.

Source notes

Generic OBD-II (SAE J1979 / ISO 15031-5). P0574 was expanded around common cruise-speed limit faults, including speed-signal issues and cruise module logic problems.

This guide is written as a generic multi-make reference, so bulletin history, sensor locations, and repair order can still change by manufacturer and engine family.

This is generic OBD-II guidance and should not override vehicle-specific service information. Exact diagnosis and repair steps vary by make, engine family, and model year.

Last reviewed: 2026-04-10

Reference: Open reference

P0574 - P0574 Usually Means Cruise Control System Vehicle Speed Too High