What does code P1749 mean?

Q: What does code P1749 mean?

Electronic Pressure Control Solenoid Circuit Low. P1749 on a Mazda means the transmission control module (TCM) has detected an abnormally low current flow in the electronic pressure control solenoid circuit, which is the solenoid the TCM uses to regulate hydraulic line pressure inside the automatic transmission. The TCM monitors the circuit and flags the code when the measured voltage or current falls outside the expected range for the commanded duty cycle, indicating a short to ground, an open circuit, or a failed solenoid coil.

DTC codes / Mazda codes / P1749

P1749 · MazdaElectronic Pressure Control Solenoid Circuit Low

P1749 on a Mazda means the transmission control module (TCM) has detected an abnormally low current flow in the electronic pressure control solenoid circuit, which is the solenoid the TCM uses to regulate hydraulic line pressure inside the automatic transmission. The TCM monitors the circuit and flags the code when the measured voltage or current falls outside the expected range for the commanded duty cycle, indicating a short to ground, an open circuit, or a failed solenoid coil.

SystemPowertrain

Code typeMazda specific

SeverityMedium

Fix difficultyIntermediate

AreaTransmission

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