John Deere 520872.02 – PL1: Control Software Internal Fault

The control software has detected a problem reading data from the internal module's EEPROM. The end-of-line memory check fails at start-up, which is typically caused by data corruption, a hardware malfunction, or invalid configuration data.

• 6110M
• 6120M
• 6130M
• 6145M
• 6155M
• 6175M
• 6195M
• 6110R
• 6120R
• 6130R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R

1. 1

   Cycle the tractor's ignition key off and back on to perform a system reset and clear temporary memory glitches

2. 2

   Inspect the wiring harness and connectors going to the PL1 Gear Shift Module for loose pins, corrosion, or damaged wires that could cause intermittent power drops

3. 3

   Check the current software version on the PL1 module using John Deere Service Advisor to see if a newer, more stable update is available

1. 1

   Reset the Module

   Perform a hard reset of the system to attempt clearing the error.

2. 2

   Reprogram / Update Software

   Connect John Deere Service Advisor and re-flash/update the PL1 control software to the latest version to overwrite corrupted EEPROM data.

3. 3

   Replace the Module

   If the software update fails or the error immediately returns, the EEPROM chip inside the module has suffered a physical hardware failure and the PL1 Gear Shift Module must be replaced.

4. 4

   Calibrate

   If the module is replaced, perform the end-of-line calibration for the DirectDrive transmission using Service Advisor.