What does code P07C1 mean?

Q: What does code P07C1 mean?

Input/Turbine Shaft Speed Sensor B Circuit Low. P07C1 indicates that the powertrain control module (PCM) has detected an abnormally low voltage signal from the input/turbine shaft speed sensor B circuit, which measures the rotational speed of the transmission input shaft. The PCM expects a fluctuating voltage within a specific range as the shaft spins, and a low signal means the circuit is either shorted to ground, has excessive resistance, or the sensor itself has failed.

DTC codes / P07xx · Transmission / P07C1

P07C1Input/Turbine Shaft Speed Sensor B Circuit Low

P07C1 indicates that the powertrain control module (PCM) has detected an abnormally low voltage signal from the input/turbine shaft speed sensor B circuit, which measures the rotational speed of the transmission input shaft. The PCM expects a fluctuating voltage within a specific range as the shaft spins, and a low signal means the circuit is either shorted to ground, has excessive resistance, or the sensor itself has failed.

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.