What Does P0568 Mean?
The ECM has detected a malfunction in the cruise control SET signal circuit. The SET function establishes the desired cruising speed and engages speed maintenance. The ECM is not receiving a valid signal from the SET switch, preventing the driver from setting a target speed. This code may also cover the SET/DECEL combined function on some vehicles.
Common Causes
40%
Worn or failed cruise control SET switch contacts within the multi-function stalk or steering wheel control module
25%
Damaged wiring or corroded connector in the SET signal circuit between the switch and ECM
25%
Clock spring failure interrupting the SET signal trace while other cruise functions may still work
10%
Failed resistor in the SET position of a resistive-ladder switch network producing an invalid voltage to the ECM
Diagnostic Steps
1
Step 1: Monitor cruise control input voltage on live data while pressing the SET button. The voltage should change to a specific level corresponding to the SET command. No change or erratic readings confirm the fault.
2
Step 2: Disconnect the cruise control switch connector and measure resistance at the SET position. For resistive-ladder switches, each position has a specific resistance (e.g., SET might be 330 ohms). Compare to manufacturer specifications.
3
Step 3: With the switch disconnected, apply the expected resistance across the ECM input pins using a decade resistance box or precision resistor. If the ECM recognizes the SET command, the wiring is good and the switch is faulty.
4
Step 4: Check clock spring continuity on the SET signal circuit wire while rotating the steering wheel slowly lock-to-lock. Mark any position where continuity drops out.
5
Step 5: Inspect all intermediate connectors for the cruise control harness for corrosion, loose pins, or moisture. On vehicles with column-mounted controls, pay special attention to the multi-function switch connector at the base of the steering column.
Estimated Repair Cost
$40 - $350
Parts + labor, varies by vehicle and location
The ECM has detected a malfunction in the cruise control SET signal circuit. The SET function establishes the desired cruising speed and engages speed maintenance. The ECM is not receiving a valid signal from the SET switch, preventing the driver from setting a target speed. This code may also cover...
The most common cause of P0568 (Cruise Control Resume Signal Malfunction) is: Worn or failed cruise control SET switch contacts within the multi-function stalk or steering wheel control module
Typical repair costs for P0568 range from $40 to $350, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Loss of the SET function prevents cruise control engagement entirely. This is an inconvenience for highway driving but has no impact on vehicle safety or other driving functions.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0568 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Powertrain
System
Cruise Control System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
