PTD 000127.12 – Transmission Oil Pressure Sensor Fault

PTD 000127.12 (PTD 127.12)

Code: 000127.12

Shortcode: 127.12


This diagnostic trouble code is generated when the control software detects a fault in the transmission oil pressure sensor. This can occur due to sensor failure, wiring issues, or connection problems, affecting the accurate measurement of transmission oil pressure.


When this error is detected, the control software may limit or disable certain transmission functions to prevent further damage.


Inspect Sensor and Wiring:

  • Check the transmission oil pressure sensor for any visible signs of damage or wear.
  • Inspect the wiring and connections to ensure they are secure and free from corrosion or damage.

Sensor Testing:

  • Perform a diagnostic test on the sensor to verify its functionality.
  • Replace the sensor if it fails the test.

System Inspection:

  • Ensure that all related components, such as connectors and wiring harnesses, are in good condition and properly connected.

Consult Technical Support:

  • If the problem persists, consult technical support or a qualified technician for further assistance.

Monitor System:

  • After performing repairs or replacements, monitor the transmission system to ensure proper operation.


Regular maintenance and periodic checks of the transmission oil pressure sensor and its connections can help prevent sensor faults and ensure accurate pressure readings.

Control Units: John Deere

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