Case IH 3019 (F-102-03) – Engine ECU (ECM): Intake manifold pressure sensor voltage is higher than expected.

This indicates that the Engine Control Unit (ECU) is receiving a voltage signal from the intake manifold pressure sensor (also referred to as the boost pressure sensor) that exceeds the maximum expected range. This is typically caused by a sensor failure, a short circuit to a high voltage source, or a wiring harness issue.

• VESTRUM CVX
• 240 Series Combines (7240, 8240, 9240)
• 7010 Combine
• Puma series Tractors (165, 180, 195, 210, 225)
• Farmall series Tractors (40, 45, 50)
• Maxxum series Tractors (e.g., 145)
• Steiger series Tractors
• Magnum series Tractors

1. 1

   Check if the tractor's battery power supply has been connected to an external power supply (like a jump starter or charger). If connected, disconnect it and test the system for normal operation.

2. 2

   Visually inspect the relevant harnesses and connectors leading to the intake manifold pressure sensor for damage, bent pins, or corrosion.

3. 3

   Check the sensor wiring for a shorted to high source condition, which directly causes the high voltage reading.

4. 4

   If the physical wiring is intact, check the ECU (ECU A-095) for the appropriate software version and re-flash the ECU if necessary.

1. 1

   Power down

   Turn off the machine and disconnect the battery to prevent electrical spikes.

2. 2

   Locate the sensor

   Locate the intake manifold pressure sensor / boost pressure sensor on the engine (on some models, like the 7010 combine, it is located just above the oil filter).

3. 3

   Inspect and clean

   Disconnect the 4-pin connector from the sensor. Inspect the connector for moisture, dirt, or pushed-back pins. Clean with contact cleaner if necessary.

4. 4

   Replace the sensor

   If the wiring is good and the fault persists, remove the faulty intake manifold pressure sensor and install the new replacement part. Ensure the rubber seal/O-ring is properly seated.

5. 5

   Reassemble and reconnect

   Plug the wiring harness back into the new sensor and reconnect the battery.

6. 6

   System reset

   Use the Case IH Electronic Service Tool (EST) to clear the fault code. If the machine was in a derated state, use the EST to perform the Engine Restart Counter Reset / Unlock Inducement configuration to return the machine to normal service.