John Deere 651.18 – ECU: Injection Valve 1 Fault

The Engine Control Unit detects that the fuel flow from injection valve 1 is lower than expected or the injector is failing to respond to electrical commands.

• 5085E
• 5090E
• 5090EL
• 5100E
• 5085M
• 5100M
• 5100MH
• 5100ML
• 5115ML
• 5090M
• 5115M
• 6110M
• 6120M
• 6130M
• 6145M
• 6155M
• 6175M
• 6195M
• 6110R
• 6120R
• 6130R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R
• 8310RT
• 8335RT
• 8360RT
• 9470RT
• 9520RT
• 9570RT
• 544K
• 3029
• 4045
• 6068
• 444K
• 524K

1. 1

   Inspect injection valve 1 for any physical blockages or debris that might restrict fuel flow.

2. 2

   Ensure adequate fuel supply to the injector and check for restrictions, air leaks, or blockages in the fuel lines.

3. 3

   Inspect the injector harness for frayed wires, corrosion, or loose pins, and perform a continuity test to rule out circuit issues.

4. 4

   Test the injector's electronic operation using John Deere Service Advisor or a compatible diagnostic tool.

5. 5

   Verify that the ECU software is up-to-date to rule out misdiagnosis and nuisance DTCs.

1. 1

   Replace the Faulty Injector

   Remove the defective cylinder #1 fuel injector and install a new or remanufactured OEM replacement to restore proper fuel flow.

2. 2

   Recalibrate the Injector (QR Code)

   Use the QR code printed on the new injector to recalibrate it into the ECU using appropriate diagnostic tools to prevent calibration faults.

3. 3

   Reset the ECU

   Clear the fault codes from the Engine Control Unit.

4. 4

   Conduct System Tests

   Run the engine and perform system tests to ensure the new injector operates correctly, fuel flow is restored, and no further errors are detected.