What does code P1566 mean?

Q: What does code P1566 mean?

Cruise Control System Engine RPM Too High. P1566 on Chrysler vehicles means the powertrain control module (PCM) has detected that engine speed exceeded the threshold allowed while the cruise control system was active or attempting to engage. The PCM monitors engine RPM (revolutions per minute) against a calibrated maximum for cruise operation and sets this code when the signal indicates the engine is revving too high for the speed control logic to safely maintain.

DTC codes / Chrysler codes / P1566

P1566 · ChryslerCruise Control System Engine RPM Too High

P1566 on Chrysler vehicles means the powertrain control module (PCM) has detected that engine speed exceeded the threshold allowed while the cruise control system was active or attempting to engage. The PCM monitors engine RPM (revolutions per minute) against a calibrated maximum for cruise operation and sets this code when the signal indicates the engine is revving too high for the speed control logic to safely maintain.

SystemPowertrain

Code typeChrysler specific

SeverityMedium

Fix difficultyIntermediate

AreaVehicle speed, idle control and auxiliary inputs

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