What does code P273C mean?

Q: What does code P273C mean?

Gear Shift Control Module A Supply Voltage Low. P273C indicates that the gear shift control module has detected a low supply voltage on its power circuit, meaning the module is not receiving the voltage it needs to operate the shift actuators correctly. The computer sets this code when the voltage at the module's supply pin falls below the manufacturer's specified threshold for a calibrated time, often due to a weak battery, faulty wiring, or a failing module.

DTC codes / P27xx · Transmission / P273C

P273CGear Shift Control Module A Supply Voltage Low

P273C indicates that the gear shift control module has detected a low supply voltage on its power circuit, meaning the module is not receiving the voltage it needs to operate the shift actuators correctly. The computer sets this code when the voltage at the module's supply pin falls below the manufacturer's specified threshold for a calibrated time, often due to a weak battery, faulty wiring, or a failing module.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

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.