John Deere 1505: Manual Rate Adjust Calibration Fault

The potentiometer was calibrated in the wrong direction or the difference between the two calibration endpoints is less than 2.00 volts. This error code is only displayed during a calibration fault and is not stored.

1. 1

   The potentiometer calibration direction

2. 2

   The voltage difference between the two calibration endpoints

1. 1

   Verify the calibration direction of the potentiometer

   Ensure the potentiometer was calibrated in the correct direction as specified in the service manual.

2. 2

   Measure the voltage difference between the two calibration endpoints

   Check that the voltage difference is at least 2.00 volts. If not, recalibrate the potentiometer.