What does code P1546 mean?

Q: What does code P1546 mean?

Air Conditioning (A/C) Clutch Feedback Circuit Low Voltage. P1546 on Chrysler vehicles means the powertrain control module (PCM) commanded the air conditioning (A/C) clutch on, but the clutch feedback circuit reported low voltage, indicating the clutch did not engage or the feedback signal is missing. The PCM monitors the clutch control circuit and expects a voltage change when the clutch is energized; a low voltage on the feedback line tells the PCM the circuit is grounded or the clutch coil is not drawing current as expected.

DTC codes / Chrysler codes / P1546

P1546 · ChryslerAir Conditioning (A/C) Clutch Feedback Circuit Low Voltage

P1546 on Chrysler vehicles means the powertrain control module (PCM) commanded the air conditioning (A/C) clutch on, but the clutch feedback circuit reported low voltage, indicating the clutch did not engage or the feedback signal is missing. The PCM monitors the clutch control circuit and expects a voltage change when the clutch is energized; a low voltage on the feedback line tells the PCM the circuit is grounded or the clutch coil is not drawing current as expected.

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.