What does code P1737 mean?

Q: What does code P1737 mean?

Lockup Solenoid. P1737 on Mazda vehicles indicates that the transmission control module (TCM) has detected an electrical fault in the lockup solenoid circuit, which controls the torque converter clutch. The TCM monitors the solenoid's current draw and expected response; when the signal is out of range or the solenoid fails to engage as commanded, it stores this code and typically illuminates the check engine light.

DTC codes / Mazda codes / P1737

P1737 · MazdaLockup Solenoid

P1737 on Mazda vehicles indicates that the transmission control module (TCM) has detected an electrical fault in the lockup solenoid circuit, which controls the torque converter clutch. The TCM monitors the solenoid's current draw and expected response; when the signal is out of range or the solenoid fails to engage as commanded, it stores this code and typically illuminates the check engine light.

SystemPowertrain

Code typeMazda specific

SeverityMedium

Fix difficultyProfessional

AreaTransmission

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