Faulty cruise control switch or steering wheel control stalk, worn or sticking contacts; Damaged wiring, poor connection or corrosion in the cruise set switch circuit; Faulty clock spring or steering column wiring where the switch signal passes through (model dependent); Brake or clutch pedal switch fault affecting the cruise control cancel or set logic; Moisture or contamination inside the switch or its connector; Fault in the control unit or an outdated calibration that is a known cause for the specific model.

P0568

Cruise Control Set Signal.

Generic
Powertrain
Generic code
Low severity

How this code is built

P: SystemPowertrain
0: Defined bySAE, the same on every car
5: AreaVehicle speed, idle control and auxiliary inputs
68: FaultThe specific fault in that area

What it means

P0568 is the generic code for an invalid or incorrect cruise control set signal. The engine or powertrain control unit monitors the signal from the cruise control set input and has seen a value or pattern it does not expect, such as a signal stuck on, out of range or erratic. The exact circuit and the way the fault is detected vary by manufacturer and model.

Symptoms

Cruise control will not set or engage
Cruise control cuts out or drops speed unexpectedly
Cruise control warning light or message on the dash
Engine management light on
Steering wheel cruise buttons feel unresponsive or intermittent

Possible causes

Faulty cruise control switch or steering wheel control stalk, worn or sticking contactslikely
Damaged wiring, poor connection or corrosion in the cruise set switch circuitlikely
Faulty clock spring or steering column wiring where the switch signal passes through (model dependent)possible
Brake or clutch pedal switch fault affecting the cruise control cancel or set logicpossible
Moisture or contamination inside the switch or its connectorpossible
Fault in the control unit or an outdated calibration that is a known cause for the specific modelrare

How to diagnose

Read all stored codes and freeze frame data, noting any other cruise, brake switch or communication codes, then check for manufacturer service bulletins for the model
Test the cruise control operation and see whether each button (set, resume, cancel) responds, noting any that stick or act intermittently
Inspect the steering wheel switch, stalk and connectors for damage, wear, moisture or corrosion
Check the brake and clutch pedal switches for correct operation and adjustment, as they can interfere with cruise logic
View live data for the cruise switch inputs, if available, and watch for a stuck or erratic value as buttons are pressed
Wiggle test the wiring and the steering column connectors while monitoring live data to find intermittent faults
Check the circuit for continuity, short to earth, short to supply and resistance against the manufacturer's wiring diagram and specification
Check the clock spring and control unit connector and earths if the switch and wiring prove good, following model-specific procedures

How to fix

Replace the faulty cruise control switch or stalk
Repair or replace damaged wiring and clean or replace corroded connectors
Replace the clock spring if it is found to be faulty
Replace or adjust faulty brake or clutch pedal switches
Dry out and clean contaminated connectors and rectify the source of water ingress
Update the control unit calibration or replace the unit only if the manufacturer identifies it as a known cause and testing confirms it

Can I keep driving?

Low severity

The car is normally safe to drive as the fault only affects cruise control, which may be unavailable. Book it in for repair, and have it checked sooner if the brake lights or other systems also misbehave.

Guide written by AI from the code's definition. Confirm with a diagnosis before replacing parts.