What does code P1574 mean?

Q: What does code P1574 mean?

Stoplamp Switch Circuit. P1574 on Chrysler vehicles indicates that the powertrain control module (PCM) has detected an implausible signal or circuit fault in the stoplamp switch circuit, which is used to inform the PCM when the brake pedal is pressed. The PCM monitors the stoplamp switch input for expected voltage changes when the brake pedal is applied or released, and this code sets when the signal does not match the expected state or is out of range.

DTC codes / Chrysler codes / P1574

P1574 · ChryslerStoplamp Switch Circuit

P1574 on Chrysler vehicles indicates that the powertrain control module (PCM) has detected an implausible signal or circuit fault in the stoplamp switch circuit, which is used to inform the PCM when the brake pedal is pressed. The PCM monitors the stoplamp switch input for expected voltage changes when the brake pedal is applied or released, and this code sets when the signal does not match the expected state or is out of range.

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.