What does code P1901 mean?

Q: What does code P1901 mean?

Turbine Shaft Speed TSS Circuit Intermittent Malfunction. P1901 on a Ford vehicle means the powertrain control module (PCM) has detected an intermittent signal from the turbine shaft speed (TSS) sensor inside the transmission. The PCM expects a steady, consistent speed reading from the turbine shaft, and this code sets when that signal drops out or becomes erratic for a brief period.

DTC codes / Ford codes / P1901

P1901 · FordTurbine Shaft Speed TSS Circuit Intermittent Malfunction

P1901 on a Ford vehicle means the powertrain control module (PCM) has detected an intermittent signal from the turbine shaft speed (TSS) sensor inside the transmission. The PCM expects a steady, consistent speed reading from the turbine shaft, and this code sets when that signal drops out or becomes erratic for a brief period.

SystemPowertrain

Code typeFord specific

SeverityMedium

Fix difficultyIntermediate

AreaTransmission

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