New Holland ENG 3019 – Engine Control Unit (ECU): Boost Pressure Sensor - Signal Above Range Max

The voltage signal returning from the boost pressure sensor to the controller has exceeded the maximum allowable threshold. This condition is typically caused by a defective sensor or a short circuit to an external power source (such as battery voltage) in the sensor's wiring harness.

• T5 series
• T5.95
• T5.105
• T5.115
• T6 series
• T7 series
• T8 series
• CR series
• CR9090
• CX series
• CX8080
• CX8090
• LB115
• SR130
• SR160
• SR175
• SV185

1. 1

   Inspect the wiring harness leading to the boost pressure sensor for chafing, melting, or pinched wires that could cause a short circuit to an external power source

2. 2

   Disconnect the sensor and check the pins for corrosion, moisture, or damage

3. 3

   Use a multimeter to verify the reference voltage and check the signal wire for a short to battery voltage

4. 4

   If the wiring is intact, the sensor itself is likely internally shorted or defective and should be replaced

1. 1

   Power Down

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

2. 2

   Locate the Sensor

   Locate the boost pressure sensor, which is typically mounted on the engine's intake manifold.

3. 3

   Disconnect

   Unplug the 4-pin electrical connector from the sensor.

4. 4

   Remove

   Unbolt or unscrew the faulty boost pressure sensor from the manifold.

5. 5

   Install

   Install the new boost pressure sensor into the manifold, ensuring any O-rings or seals are properly seated.

6. 6

   Reconnect

   Plug the electrical connector back into the new sensor until it clicks securely.

7. 7

   Clear Codes

   Reconnect the battery, turn on the ignition, and use a diagnostic tool (or DTC eraser) to clear the inactive ENG 3019 fault code from the Engine ECU.

8. 8

   Test

   Start the engine and verify that the warning light remains off and the engine operates without derating.