What does code P0742 mean?

Q: What does code P0742 mean?

Torque Converter Clutch Circuit Stuck On. P0742 means the powertrain control module has commanded the torque converter clutch to release, but the clutch remains applied or engaged when it should not be. The computer detects this by comparing engine speed to transmission input or output speed and seeing them stay locked together when a slip condition was expected.

DTC codes / P07xx · Transmission / P0742

P0742Torque Converter Clutch Circuit Stuck On

P0742 means the powertrain control module has commanded the torque converter clutch to release, but the clutch remains applied or engaged when it should not be. The computer detects this by comparing engine speed to transmission input or output speed and seeing them stay locked together when a slip condition was expected.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyProfessional

AreaTransmission

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