01 P0030 H02S heater control circuit (Bank 1 sensor 1) • 02 Understanding Car Wheel Shaking at Low Speeds: Causes and S… • 03 BMW Unveils New Armored i7 and V8 7 Series for High-Profile… • 04 The Latest Advances in Shipbuilding: How Technology is Shap… • 05 What Happens When the Engine Temperature Sensor Fails • 06 A Comparison of Planetary and Bevel Gears: Types, Functions… • 07 11 Reasons Your Car Won't Start and How to Resolve Them • 08 VW Touareg vs. VW Tiguan: The Ultimate German Off-Road Batt… • 09 Fuel Injectors: A Comprehensive Guide to Their Anatomy, Fun… • 10 These Warnings Can Prevent Breakdowns And Extend Your Vehic… •

DTC codes / Chrysler codes / P1568

P1568 · ChryslerCruise Servo Stroke Greater Than Commanded In Cruise

P1568 on Chrysler vehicles means the speed control servo (cruise servo) has moved farther than the powertrain control module commanded while cruise control is engaged. The computer monitors servo position feedback and sets this code when the actual stroke exceeds the commanded stroke by a calibrated margin, indicating a mechanical or feedback fault in the cruise control system.

SystemPowertrain
Code typeChrysler specific
SeverityLow
Fix difficultyIntermediate
AreaVehicle speed, idle control and auxiliary inputs

Symptoms you may notice

  • Cruise control may not engage or may disengage unexpectedly while driving
  • The cruise control indicator light may flash or stay off when you try to set speed
  • Vehicle speed may surge or hunt slightly when cruise is active
  • The engine may feel like it is not holding a steady speed on hills
  • Often no symptoms besides the warning light, especially if cruise is rarely used

Common causes, most likely first

  1. Binding or sticking cruise servo cable or linkage
  2. Faulty cruise servo assembly (internal wear or damaged position sensor)
  3. Damaged or misadjusted servo position feedback sensor or wiring
  4. Vacuum leak or faulty vacuum supply to the cruise servo (on vacuum-operated systems)
  5. Corroded or shorted electrical connectors at the servo or PCM (powertrain control module)
  6. PCM software or internal fault misinterpreting servo feedback

How to diagnose and fix it

  1. Inspect the cruise servo cable and linkage for binding, kinks, or debris, and lubricate or replace as needed
  2. Check servo electrical connector and wiring for corrosion, chafing, or loose pins, and repair any faults
  3. Test the servo position sensor signal with a scan tool while manually moving the servo through its range
  4. Verify vacuum supply and check for leaks in the cruise servo vacuum circuit if equipped
  5. Replace the cruise servo assembly if the feedback signal is erratic or the servo does not move smoothly
  6. Clear the code and road-test the vehicle under cruise control to confirm the repair
  7. If the code returns after all mechanical and electrical checks, diagnose the PCM and consider reprogramming or replacement

Servo stroke faults that fool good technicians

  • A binding cable is the most common cause of P1568, yet many technicians replace the servo first and the code returns because the cable was never checked.
  • The servo position sensor can fail intermittently, producing a normal signal on a static test but dropping out only when the servo is moving under cruise load.
  • On vacuum-operated Chrysler cruise systems, a small vacuum leak at the servo diaphragm can cause the servo to over-travel and set this code without any obvious driveability symptom.
  • P1568 can be set by a PCM that has lost its adaptive memory after a battery disconnect, so clearing the code and performing a relearn may resolve it without parts replacement.
  • Do not confuse this code with throttle body or accelerator pedal faults; P1568 is specific to the cruise servo circuit and does not indicate a general engine performance problem.

Can I keep driving with P1568?

The vehicle remains safe to drive because the cruise control system simply disables itself when this fault is present. You can continue driving normally, but avoid using cruise control until the fault is repaired, and do not attempt to force the system to engage.

Tools that help

Tools we recommend are in the Auto Veteran shop on Amazon. As an Amazon Associate we earn from qualifying purchases.

Guidance is general and written for Chrysler vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.

Running on fumes Free guides aren't free to make. Top up the tank. Any amount, one time. Fuel the Garage