What does code P1775 mean?

Q: What does code P1775 mean?

Torque Down Signal 1 Circuit. P1775 on Mazda vehicles means the transmission control module (TCM) has detected an electrical fault in the torque-down signal 1 circuit, which is the wire that carries a request from the TCM to the engine control module (ECM) to momentarily reduce engine torque during gear shifts. The TCM monitors the circuit for open, short-to-ground, or short-to-power conditions and sets this code when the voltage on the signal line falls outside the expected range.

DTC codes / Mazda codes / P1775

P1775 · MazdaTorque Down Signal 1 Circuit

P1775 on Mazda vehicles means the transmission control module (TCM) has detected an electrical fault in the torque-down signal 1 circuit, which is the wire that carries a request from the TCM to the engine control module (ECM) to momentarily reduce engine torque during gear shifts. The TCM monitors the circuit for open, short-to-ground, or short-to-power conditions and sets this code when the voltage on the signal line falls outside the expected range.

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.