What does code P1735 mean?

Q: What does code P1735 mean?

First Gear Switch Circuit Failure. P1735 on a Mazda means the transmission control module (TCM) has detected an unexpected signal from the first gear switch circuit, which is the sensor or switch that confirms the transmission has mechanically engaged first gear. The TCM compares the switch state to the commanded gear and the actual gear ratio, and when the voltage or continuity does not match the expected first-gear condition, it stores this code and may illuminate the check engine light or flashing hold lamp.

DTC codes / Mazda codes / P1735

P1735 · MazdaFirst Gear Switch Circuit Failure

P1735 on a Mazda means the transmission control module (TCM) has detected an unexpected signal from the first gear switch circuit, which is the sensor or switch that confirms the transmission has mechanically engaged first gear. The TCM compares the switch state to the commanded gear and the actual gear ratio, and when the voltage or continuity does not match the expected first-gear condition, it stores this code and may illuminate the check engine light or flashing hold lamp.

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.