What does code P1554 mean?

Q: What does code P1554 mean?

Cruise Engaged Circuit High Voltage. P1554 on a Chrysler vehicle means the powertrain control module (PCM) has detected an abnormally high voltage on the cruise control engaged signal circuit, which is the wire that tells the computer the cruise system is active. The PCM expects a specific voltage range on that input, and a reading above the threshold triggers this code because the circuit is either shorted to power, open, or receiving a false signal.

DTC codes / Chrysler codes / P1554

P1554 · ChryslerCruise Engaged Circuit High Voltage

P1554 on a Chrysler vehicle means the powertrain control module (PCM) has detected an abnormally high voltage on the cruise control engaged signal circuit, which is the wire that tells the computer the cruise system is active. The PCM expects a specific voltage range on that input, and a reading above the threshold triggers this code because the circuit is either shorted to power, open, or receiving a false signal.

SystemPowertrain

Code typeChrysler specific

SeverityLow

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.