John Deere 524242.00 – PTP/PTQ: Transmission Supply Pressure Fault

A fault has been detected in the transmission indicating a supply pressure problem within the Pro-Drive transmission system. While the exact nature of the pressure deviation is not specified by this code alone, it serves as a general alert for a fault in the transmission's hydraulic supply pressure, which can be caused by low fluid, restricted flow, or sensor issues.

• 9570 STS
• 9670 STS
• 9770 STS
• 9870 STS

1. 1

   Perform a system reboot by turning the key to the 'OFF' position and waiting at least two minutes before restarting to clear temporary electronic glitches

2. 2

   Check the transmission oil level and top off if necessary, as low hydraulic fluid is a primary cause of pressure issues in hydrostatic systems

3. 3

   Visually inspect all hydraulic lines, hoses, and connections for any signs of leaks

4. 4

   Check for clogged or restricted transmission oil filters that could impede hydraulic flow

5. 5

   Inspect the hydraulic system for potential air leaks, which can lead to erratic pressure and performance

1. 1

   Replace transmission filters

   Replace the Pro-Drive transmission and hydrostatic/hydraulic oil filters as a primary step in addressing pressure-related fault codes.

2. 2

   Conduct a transmission pressure test

   Warm the hydraulic oil to normal operating temperature. Connect a hydraulic pressure gauge to the charge pressure test port and run the engine at the specified RPM. For a 9770 with Pro-Drive, the transmission supply pressure should not be less than 276 psi.

3. 3

   Inspect the transmission oil pressure sensor

   Inspect the pressure sensor and its wiring for damage or corrosion. A faulty sensor can send incorrect readings to the control unit. Replace the sensor if it is suspected to be faulty.

4. 4

   Check solenoid operation

   With the engine running, check the energized state of the transmission control solenoids. A lack of magnetization may indicate a faulty coil.