New Holland ENG 3967 – Engine Control Module (ECM) / ISM-DI ENGINE: Quick Response data is not written

This fault code triggers when the engine computer detects that the Quick Response (QR) calibration codes printed on each fuel injector are missing, blank, or have not been programmed into its memory.

• L218
• L220
• SR175
• SV185

1. 1

   Check recent service history to determine if the Engine ECU was recently replaced, updated, or flashed, which would wipe the injector QR data

2. 2

   Check if one or more fuel injectors were recently replaced and the technician forgot to write the new QR codes to the ECU

3. 3

   Check for accompanying codes (such as ENG 3968, ENG 3969, ENG 3970, or ENG 3980) that might indicate a corrupted memory file or a failing ECU dropping its memory

1. 1

   Retrieve the QR Codes

   Physically inspect the fuel injectors installed in the engine. Write down the alphanumeric Quick Response (QR) calibration code printed on each injector, being careful to note exactly which cylinder each injector is installed in.

2. 2

   Connect Diagnostic Equipment

   Connect the New Holland Electronic Service Tool (EST) to the machine's diagnostic port.

3. 3

   Launch the ISM DI Tool

   Open the EST software. Note that accessing the ISM-DI engine controller requires a specific add-on software license called the 'ISM DI Engine Tool Software' (or IHI Shibaura Service Tool).

4. 4

   Write the Data

   Navigate to the 'injector code adjustment' or programming menu. Enter the QR codes you recorded for each respective cylinder (e.g., Cyl 1, Cyl 2, Cyl 3, Cyl 4).

5. 5

   Save and Clear

   Save the configuration to the ECU. Cycle the machine's key off and back on, then use the EST to clear the ENG 3967 fault code. Verify the code does not return.