John Deere 000651.13 – ECU: Injector Number 1 Calibration Code Error

The Engine Control Unit (ECU) has detected a problem with the calibration data for the electronic fuel injector in cylinder number one. Each injector has a unique calibration code describing its exact flow characteristics, which must be programmed into the ECU for precise fuel management. This fault indicates the calibration data has been lost, has become corrupted, or a newly installed injector was not correctly coded to the ECU, which can negatively impact engine performance, fuel efficiency, and emission control.

• 5085M
• 5090M
• 5100M
• 5100MH
• 5100ML
• 5115M
• 5115ML
• 6145J
• 6165J
• 6180J
• 6205J
• 6105R
• 6115R
• 6125R
• 6170R
• 6190R
• 6210R
• 6115M
• 6125M
• 7200R
• 7215R
• 9230
• 9330
• 9430
• 9530
• 9630
• 9410R
• 9460R
• 9510R
• 9560R
• 4045
• 6068
• 6090
• 6135

1. 1

   Verify the fault code using a diagnostic tool and note any other active or stored fault codes.

2. 2

   Check for related faults such as low fuel pressure or sensor voltage issues, and address them first.

3. 3

   Inspect the wiring harness and electrical connector for fuel injector number one for damage, corrosion, loose pins, or chafing.

4. 4

   Review recent repairs to the engine, ECU, or fuel injectors to ensure correct components and procedures were used.

1. 1

   Read existing injector codes

   Connect a compatible diagnostic tool (e.g., John Deere Service Advisor or Cojali Jaltest) to the machine's diagnostic port. Navigate to the ECU parameters and compare the stored code for injector #1 with the code physically printed on the injector body.

2. 2

   Program correct calibration code

   If the codes do not match or a new injector was installed, use the diagnostic tool's injector coding function to enter the new calibration code found on the injector label. Confirm the entry and allow the ECU to accept it.

3. 3

   Replace fuel injector

   If the original injector is faulty or the code is unreadable, replace it. Clean the area, depressurize the fuel system, and remove the injector using a deep socket (e.g., JDE92). Clean the bore, install a new copper sealing washer, insert the new injector, and torque to spec in a two-stage process. Reconnect lines, bleed the fuel system, and program the new code.

4. 4

   Reprogram ECU

   If the ECU memory is corrupted or after an engine replacement, have a John Deere dealer reprogram the ECU using the engine serial number to retrieve the correct software file with preloaded calibration values.