John Deere 000736.05 – PTI / PTP / EPC / PTQ: Transmission Solenoid Circuit Fault

This fault code indicates an electrical circuit fault within the transmission system. Depending on the transmission type, it typically points to a 'current too low' or circuit fault in a specific solenoid, such as the Clutch C3 Solenoid (PowerShift), Reverse Brake Solenoid (IVT), or Gear Selector Solenoid Valve K1 (EPC). The system has detected a condition that requires immediate attention to prevent further damage or operational issues.

• 7210J Series
• 6130 to 6930 Series
• 7720 Series
• 7820 Series
• 7920 Series
• 8RT Series

1. 1

   Cycle the key switch and restart the vehicle to see if it clears an intermittent fault

2. 2

   Check the transmission/hydraulic oil level

3. 3

   Perform a visual inspection for any visible damage or debris around the batteries and alternator

4. 4

   If communication errors with the ECU are also present, check fuse F9

1. 1

   Identify the specific solenoid

   Based on the machine model and transmission type (PowerShift, IVT, etc.), locate the specific solenoid indicated by the fault (e.g., C3 Clutch Solenoid, Reverse Brake Solenoid, or Gear Selector Solenoid Y40).

2. 2

   Inspect wiring and connectors

   Carefully inspect the wiring harness and electrical connectors leading to the identified solenoid. Look for signs of damage, corrosion, loose pins, or chafing.

3. 3

   Test the circuit

   Disconnect the solenoid and measure the resistance across its terminals to check if it is within the manufacturer's specified range. An open circuit (infinite resistance) or a short circuit (zero resistance) indicates a faulty solenoid. With the key on (engine off), check for voltage at the solenoid's electrical connector to ensure the controller is sending power, and check for continuity on the ground side of the circuit.

4. 4

   Replace the faulty component

   If the solenoid is found to be faulty during resistance testing, replace it. If the wiring is damaged, repair or replace the affected harness section.