Massey Ferguson 651.13 – Engine ECU (Electronic Control Unit): Injector Number 1 Calibration Code Issue / Calibration Fault

The Engine Control Unit (ECU) has detected that the calibration code (often referred to as the QR code or IQA - Injector Quantity Adjustment code) for the cylinder #1 electronic fuel injector is missing, invalid, or does not match expected parameters.

• 4710
• 7724S
• 5712SL
• Interim Tier 4 (2012-2015)
• 7722
• 7722S
• 7615
• 5613
• 5713SL
• 7720S
• 7716
• 7718
• T4
• 7715
• 5710SL
• 7726
• 7616
• 7618
• 5608
• 4708
• 7619
• 7626
• 7726S
• 7624
• 4707
• 4709
• 5711SL
• 7614
• 7718S
• 5610
• 7620
• 7719
• 7714
• 7716S
• T4 (2015-2021)
• 5612
• 7622
• 7720
• Tier 4 (2015-2021)
• 5611
• 7715S
• 5609
• 7724
• 4607
• 4608
• 4609
• 4610
• 6612
• 6613
• 6614
• 6615
• 6616
• 8650
• 8690
• 8727
• 8730
• 8737

1. 1

   Determine if Injector #1 was recently replaced, as failing to program the new calibration code into the ECU will trigger this code immediately.

2. 2

   Locate cylinder #1 (usually the front-most cylinder on the engine block) and read the alphanumeric calibration code/QR code printed on the top of the injector solenoid.

3. 3

   Connect a compatible diagnostic scanner (such as AGCO EDT or Jaltest) to verify ECU data by comparing the programmed code for cylinder #1 against the physical code printed on the injector.

4. 4

   Check if the ECU software is corrupted or requires a flash update from the dealer, as the ECU may be rejecting a valid string if the codes match but the fault persists.

1. 1

   Connect diagnostic scanner

   Connect your diagnostic scanner to the tractor's diagnostic port.

2. 2

   Turn ignition ON

   Turn the ignition key to the ON position (engine off).

3. 3

   Access Engine ECU

   Access the Engine ECU module and navigate to the 'Injector Coding' or 'IQA Programming' menu.

4. 4

   Select Cylinder #1

   Select Cylinder #1.

5. 5

   Enter calibration code

   Manually type in the alphanumeric code printed on the top of the cylinder #1 fuel injector.

6. 6

   Save configuration

   Save/Write the configuration to the ECU.

7. 7

   Clear fault code

   Clear the 000651.13 fault code.

8. 8

   Verify repair

   Cycle the ignition key off for 30 seconds, then start the engine to verify the code does not return.

9. 9

   Clean area

   If the injector is faulty and must be replaced, clean the area around cylinder #1 to prevent debris from entering the fuel system.

10. 10

    Disconnect harness

    Disconnect the electrical harness from the cylinder #1 injector.

11. 11

    Remove fuel line

    Remove the high-pressure fuel line connecting the fuel rail to the injector. (Cap the rail and line immediately).

12. 12

    Remove injector

    Remove the injector hold-down clamp/bolt and carefully extract the injector from the cylinder head.

13. 13

    Record new code

    CRITICAL: Before installing the new injector, write down its new calibration/QR code.

14. 14

    Install new injector

    Install the new injector with a new copper base washer and O-rings. Torque the hold-down clamp and high-pressure lines to OEM specifications.

15. 15

    Reconnect harness

    Reconnect the electrical harness.

16. 16

    Program new code

    Follow steps 1-8 to program the new injector's code into the ECU.

17. 17

    Bleed fuel system

    Bleed the fuel system if necessary, start the engine, and check for leaks.