PTF 000190.31 – Engine Speed Sensor, Fault

PTF 000190.31 (PTF 190.31)

Code: 000190.31

Shortcode: 190.31


This error code is generated when the ECU control software detects an open circuit to the engine speed sensor. A replacement value is transmitted, generating this diagnostic trouble code in the PTF control software. This fault also generates a diagnostic trouble code in the ECU control software, which takes priority.


When this code is detected, the control software may exhibit limited or no functionality.


  • Inspect Engine Speed Sensor Circuit:
    • Check for an open circuit in the wiring to the engine speed sensor.
    • Repair or replace any damaged or disconnected wires.
  • Test the Sensor:
    • Verify the functionality of the engine speed sensor using diagnostic tools.
    • Replace the sensor if it is found to be faulty.
  • Check Connectors:
    • Ensure that all connectors are properly seated and free of corrosion.
    • Clean or replace connectors as needed.


Regular inspection and maintenance of the engine speed sensor and its circuit can prevent open circuit issues and ensure reliable operation.

Control Units: John Deere

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