New Holland ENG 3191 – Engine Control Module (ECM) / Bosch EDC7: Cylinder2Warning - Application Dependent

The engine's control system has detected an abnormal operating condition or electrical anomaly specifically on the fuel injector circuit for Cylinder 2. The exact parameters triggering this warning are based on the specific engine calibration for that particular machine.

• T8.275
• T8.300
• T8.320
• T8.330
• T8.350
• T8.360
• T8.380
• T8.390
• T8.410
• T8.435
• T9.390
• T9.435
• CR7.90
• CR8.90
• CR9.90
• Magnum Series (235 through 350)
• Axial-Flow Combines

1. 1

   Use the CNH Electronic Service Tool (EST) to check for companion codes (like 3192 or 3193) to confirm if there is a hard electrical fault in the circuit.

2. 2

   Inspect the wiring harness between the EDC7 ECM and the Cylinder 2 injector for chafed wires, melted insulation, or loose connections.

3. 3

   Disconnect the Cylinder 2 injector and check the connector pins for corrosion, moisture, or damage.

4. 4

   Measure the electrical resistance of the Cylinder 2 injector solenoid with a multimeter to ensure it is within OEM specifications.

5. 5

   Perform a cylinder cutout test via the diagnostic tool to verify if Cylinder 2 is contributing to engine power.

1. 1

   Disconnect battery

   Disconnect the machine's battery to prevent electrical shorts.

2. 2

   Repair wiring harness

   If the wiring harness is damaged, repair the damaged section or replace the injector pigtail connector.

3. 3

   Clean injector area

   If the injector has failed, thoroughly clean the area around the Cylinder 2 injector to prevent dirt from entering the engine.

4. 4

   Remove high-pressure fuel line

   Use two wrenches to carefully disconnect and remove the high-pressure fuel line connected to the Cylinder 2 injector. (Note: Common rail high-pressure lines are typically single-use and must be replaced, not reused).

5. 5

   Remove injector

   Remove the injector hold-down clamp and extract the faulty injector.

6. 6

   Clean injector bore

   Clean the injector bore in the cylinder head.

7. 7

   Install new injector

   Install the new injector with a new copper sealing washer and O-ring. Torque the hold-down bolt to OEM specifications.

8. 8

   Install new fuel line

   Install a new high-pressure fuel line between the fuel rail and the injector.

9. 9

   Reconnect electrical harness

   Reconnect the electrical harness to the injector.

10. 10

    Clear fault code

    Reconnect the battery, prime/bleed the fuel system, and use the CNH EST to clear the ENG 3191 fault code.

11. 11

    Verify repair

    Run the engine to verify the misfire is gone and the code does not return.