What does code P1537 mean?

Q: What does code P1537 mean?

A/C Request Circuit Low Voltage. P1537 on a Chrysler vehicle means the powertrain control module (PCM) has detected a low-voltage condition on the air conditioning request circuit, which is the wire that tells the PCM the A/C system needs engagement. The PCM expects to see a specific voltage on this input when the A/C is requested, and a reading below the calibrated threshold sets this code.

DTC codes / Chrysler codes / P1537

P1537 · ChryslerA/C Request Circuit Low Voltage

P1537 on a Chrysler vehicle means the powertrain control module (PCM) has detected a low-voltage condition on the air conditioning request circuit, which is the wire that tells the PCM the A/C system needs engagement. The PCM expects to see a specific voltage on this input when the A/C is requested, and a reading below the calibrated threshold sets this code.

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.