Faulty or misreading vehicle speed signal (speed sensor or wheel speed signal) giving a speed that disagrees with the set speed; Throttle control fault, such as a sticking or dirty throttle body or a throttle actuator problem, preventing speed being held; Wiring or connector damage, corrosion or poor earths in the speed signal or cruise control circuits; Faulty cruise control switch, brake switch or clutch switch giving erratic cancel or set signals; Engine or transmission problem (misfire, restricted airflow, slipping or poor shift control) causing speed not to follow demand; Internal powertrain control module fault or outdated software.

P1563

Cruise Vehicle Speed Set Speed Difference Too High.

Chrysler
Powertrain
Manufacturer code
Low severity

How this code is built

P: SystemPowertrain
1: Defined byThe manufacturer
5: AreaVehicle speed, idle control and auxiliary inputs
63: FaultThe specific fault in that area

What it means

On Chrysler vehicles, P1563 means the powertrain control module saw too large a difference between the actual road speed and the speed set for cruise control. The cruise system could not hold or reach the requested speed within the expected limits, so the fault was stored and cruise operation is usually cancelled. The exact enabling conditions and thresholds vary by model and engine, so check the manufacturer data for the vehicle.

Symptoms

Cruise control will not engage or drops out unexpectedly
Vehicle fails to hold the set speed, drifting above or below it
Cruise or check engine warning light on
Surging or hunting while cruise is active
Cruise set or resume buttons seem unresponsive

Possible causes

Faulty or misreading vehicle speed signal (speed sensor or wheel speed signal) giving a speed that disagrees with the set speedlikely
Throttle control fault, such as a sticking or dirty throttle body or a throttle actuator problem, preventing speed being heldlikely
Wiring or connector damage, corrosion or poor earths in the speed signal or cruise control circuitspossible
Faulty cruise control switch, brake switch or clutch switch giving erratic cancel or set signalspossible
Engine or transmission problem (misfire, restricted airflow, slipping or poor shift control) causing speed not to follow demandpossible
Internal powertrain control module fault or outdated softwarerare

How to diagnose

Read all stored and pending codes and the freeze frame data, noting vehicle speed, load and conditions when the fault set
Check for other speed sensor, throttle, brake switch or transmission codes and deal with those first
Inspect the wiring and connectors for the speed sensor, throttle body, cruise switches and brake switch for damage, water ingress or corrosion
Compare live data for vehicle speed against the speedometer and a known true speed on a road test
Check the brake and clutch switch operation and the cruise switch signals in live data
Inspect the throttle body for carbon build-up and check throttle position and commanded values in live data
Check the engine for misfires, air leaks or restrictions, and the transmission for slip, following model-specific procedures
Check for any applicable software updates for the vehicle from the manufacturer

How to fix

Repair or replace the faulty speed sensor or correct the speed signal fault
Clean or replace the throttle body or actuator if it is sticking or faulty
Repair damaged wiring, connectors or earths in the affected circuits
Replace the faulty cruise control, brake or clutch switch
Rectify any underlying engine or transmission fault found
Update or replace the control module software or unit only if an outdated calibration or confirmed module fault is found

Can I keep driving?

Low severity

The car is generally safe to drive without cruise control, so it can be booked in for repair. Take care if there are also throttle or transmission symptoms, and have those checked sooner.

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