John Deere 524176.19 – TCU / PTA: Incorrect CAN BUS Message, Status of Park Lock Pressure Sensor from PLC (or TIA Control Software)

The PLC (Programmable Logic Controller) or TIA control software is unable to determine the status of the Park Lock Pressure Sensor (B90). Because it cannot determine the sensor's status, it cannot provide the CAN BUS with relevant data. A replacement value is transmitted instead, which triggers this code in the transmission module.

• 6110R
• 6120R
• 6130R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R
• 6230
• 6330
• 6430
• 6930
• 6010
• 6110
• 6210
• 6310
• 6410
• 6510
• 6610
• 6810
• 6910
• 6910S
• 6910SE

1. 1

   Check for companion codes (e.g., PLC 328016.31 or PLC 328017.31) indicating electrical failures with the B90 sensor

2. 2

   Inspect the Park Lock Pressure Sensor (B90) to verify it is functioning correctly

3. 3

   Examine all wiring and connectors associated with the park lock pressure sensor and CAN BUS system for damage, corrosion, or disconnection

4. 4

   Verify that the CAN BUS is transmitting accurate data from the PLC control unit to the TCU/PTA without interruptions

5. 5

   Ensure the PLC control unit is receiving adequate power (minimum 9 volts) and functioning correctly

1. 1

   Visual Inspection & Harness Repair

   Locate the B90 Park Lock Pressure Sensor on the transmission control block. Disconnect the sensor and inspect the pins for corrosion or pushed-out terminals. Repair or replace any faulty wiring or connectors in the harness leading back to the PLC.

2. 2

   Test the Sensor Circuit

   Using a multimeter, check the 5-volt power supply to the Park Lock Pressure Sensor (B90). Ensure there are no shorts to ground or shorts to a supply lead.

3. 3

   Replace the Sensor

   If the wiring and voltage supply are intact but the PLC still cannot determine the sensor's status, the B90 sensor has failed internally and must be replaced.

4. 4

   Update Software

   Ensure that the software for both the PLC and the TCU/PTA are updated to the latest versions to prevent CAN BUS communication glitches.

5. 5

   Clear and Test

   Clear the fault codes from the system. Start the tractor and cycle the park lock mechanism to ensure the code does not return and the transmission engages properly.