John Deere 1883 – Chassis Control Unit (CCU) or Rear PTO Control Unit (RPT): Rear PTO Overspeed

The control software has detected via the rear PTO speed sensor that the rear PTO shaft is turning at a speed much higher than expected (17% above its rated speed). The control unit will degrade the functionality of the rear PTO to mitigate the risk of mechanical failure or unsafe operating conditions.

• 5085E
• 5090E
• 5090EL
• 5100E
• 5045E
• 5055E
• 5065E
• 5075E
• 5065M
• 5075M
• 5085M
• 5100M
• 5100MH
• 5100ML
• 5115ML
• 5095M
• 5095MH
• 5105M
• 5015ML
• 5090M
• 5115M
• 6110R
• 6120R
• 6130R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R
• 5125M
• 6230
• 6330
• 6430
• 7600
• 7700
• 7800
• 8130
• 8230
• 8330
• 8430
• 8530
• 8225R
• 8320R
• 8400R
• 9430
• 9530
• 9630

1. 1

   Verify if the operator was performing rapid downshifts using the POWERSHIFT transmission (operator error cause)

2. 2

   Verify engine speed is properly adjusted and PTO settings align with the implement's specified speeds

3. 3

   Inspect mechanical drive components for binding, slippage, or issues in the PTO clutch

4. 4

   Check the internal tone ring on the shaft to ensure it has not come loose

5. 5

   Verify the wiring harness and connector to the Rear PTO Speed Sensor for damage or open circuits

1. 1

   Adjust Operation

   If the code was caused by operator error (e.g., excessive engine speed or rapid downshifting), adjust the engine speed and clear the code by cycling the tractor's key switch.

2. 2

   Repair/Replace Mechanical Parts

   If mechanical issues are found in the PTO drive components or if the internal tone ring is loose/damaged, repair or replace the faulty parts.

3. 3

   Replace the Sensor

   If the wiring is intact but the sensor is providing erratic or out-of-range data to the CCU, replace the Rear PTO Speed Sensor.

4. 4

   System Reset and Calibration

   After making necessary adjustments or replacing the sensor, reset the Chassis Control Unit (CCU) and recalibrate the PTO system to ensure correct speed settings are registered. Operate the vehicle at rated speed for 1-2 minutes to verify the code does not return.