Faulty cruise control switch on the steering wheel; Clockspring (steering wheel wiring reel) failure causing an open or short in the switch circuit; Wiring damage between the steering wheel and the PCM, including chafed or corroded connectors; Brake pedal switch misadjustment or failure, which the PCM uses to cancel cruise; Speed sensor or vehicle speed signal problem that prevents cruise engagement; PCM internal fault or corrupted cruise control software, though this is less common

DTC codes / Chrysler codes / P1584

P1584 · ChryslerCruise Control Disabled

Q: What does code P1584 mean?

Cruise Control Disabled. P1584 on Chrysler vehicles means the powertrain control module (PCM) has disabled the speed control system, usually because it detected a fault in the cruise control switch circuit or a related input it needs to allow cruise operation. The PCM stores this code when it commands cruise control off and will not let the system engage until the underlying fault is corrected and the code is cleared.

P1584 on Chrysler vehicles means the powertrain control module (PCM) has disabled the speed control system, usually because it detected a fault in the cruise control switch circuit or a related input it needs to allow cruise operation. The PCM stores this code when it commands cruise control off and will not let the system engage until the underlying fault is corrected and the code is cleared.

SystemPowertrain

Code typeChrysler specific

SeverityLow

Fix difficultyIntermediate

AreaVehicle speed, idle control and auxiliary inputs

Symptoms you may notice

Cruise control will not engage when you press the set button
The cruise indicator light on the dash may flash or stay off entirely
No other drivability symptoms in most cases, just the warning light
Horn or other steering wheel buttons may stop working if the clock spring is involved
Speed control may work intermittently before failing completely
Often no symptoms besides the warning light

Common causes, most likely first

Faulty cruise control switch on the steering wheel
Clockspring (steering wheel wiring reel) failure causing an open or short in the switch circuit
Wiring damage between the steering wheel and the PCM, including chafed or corroded connectors
Brake pedal switch misadjustment or failure, which the PCM uses to cancel cruise
Speed sensor or vehicle speed signal problem that prevents cruise engagement
PCM internal fault or corrupted cruise control software, though this is less common

How to diagnose and fix it

Scan all modules for codes and record any stored or pending codes before clearing anything
Check the cruise control switch operation using a scan tool that can read switch input data
Inspect the clockspring and steering wheel wiring for continuity and signs of wear
Test the brake pedal switch for proper adjustment and signal to the PCM
Verify vehicle speed signal is present and accurate with a scan tool
Repair or replace the faulty component, clear the code, and test cruise control operation
If all inputs are good, check for PCM software updates or a faulty PCM

Why the clock spring is the usual suspect

The cruise control switches on many Chrysler vehicles share a ground path through the clockspring, so a failing clockspring can disable cruise without affecting the horn or airbag.
A misadjusted brake pedal switch can set P1584 even though the brake lights work normally, because the PCM sees the brake signal as applied and cancels cruise.
Some aftermarket cruise control kits or remote starters can interfere with the factory cruise circuit and trigger this code, so check for added electronics first.
P1584 can be stored by a low battery or voltage spike, so clear the code and see if it returns before replacing parts.
The code does not always mean the cruise switch itself is bad; the PCM may disable cruise due to an unrelated fault such as a wheel speed sensor code.

Can I keep driving with P1584?

The vehicle remains safe to drive because cruise control is a convenience feature, but you should avoid using cruise until the fault is repaired. The code will not affect braking, steering, or engine performance.

Tools that help

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