Code Definition

P0722 — Output Speed Sensor No Signal

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About P0722

P0722 is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P0722 is stored, the module has detected a sensor-related fault — the reported value from the named sensor is out of spec.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P0722 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The P0722 code is triggered when the Engine Control Module (ECM) or Transmission Control Module (TCM) does not receive a signal from the output speed sensor. This sensor plays a vital role in monitoring the speed of the transmission's output shaft, information that is essential for proper gear shifting and transmission performance. The absence of a signal from this sensor can lead to various transmission issues, such as the inability to shift gears correctly, erratic shifting behaviour, and can potentially cause the vehicle's transmission to enter a fail-safe or limp mode.

Quick Facts