ECU 000157.12 – Fuel Rail Pressure Sensor Fault Detected. John Deere System Advisory.

ECU 000157.12 (ECU 157.12)

Code: 000157.12

Shortcode: 157.12


This code, ECU 000157.12, indicates that the fuel rail pressure sensor has detected an issue while measuring the fuel pressure. Potential causes could include sensor malfunction, incorrect sensor calibration, or electrical issues within the sensor circuit.


Faulty pressure readings can lead to inappropriate fuel injection adjustments, affecting engine efficiency and stability.


  • Inspect and Test the Fuel Pressure Sensor: Check the sensor for physical damage and test its output to verify accuracy.
  • Check Sensor Wiring and Connections: Ensure all connections are secure and wiring is intact, without corrosion or damage.
  • Calibrate or Replace Sensor: If the sensor is found to be inaccurate, recalibrate or replace it.
  • Perform System Checks After Repair: After any necessary repairs, conduct system checks to ensure all components are functioning correctly and the sensor is providing accurate data.


Accurate fuel pressure monitoring is essential for optimal engine performance. Regular sensor checks can prevent issues related to faulty readings.

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