Case IH ENG213 – ECU: Oil Temperature Sensor Voltage Too Low

The Engine Control Unit (ECU) has detected that the voltage from the engine oil temperature sensor is below the expected normal operating range. This typically indicates a short circuit to ground in the sensor's wiring or an internal failure of the sensor itself, which prevents the proper monitoring of oil temperature required for optimal engine performance and protection.

• Magnum 180
• Magnum 200
• Magnum 215
• Magnum 220
• Magnum 240
• Magnum 245
• Magnum 250
• Magnum 255
• Magnum 275
• Magnum 280
• Magnum 305
• Magnum 310
• Magnum 335
• Magnum 340
• Magnum 380
• MX210
• MX215
• MX230
• MX245
• MX275
• MX305
• 8910
• 8920
• 8930
• 8940
• 8950

1. 1

   Visually inspect the engine oil temperature sensor and its wiring harness for visible damage, frayed wires, corrosion on connectors, or oil leaks.

2. 2

   Ensure the electrical connector to the sensor is clean and securely fastened.

3. 3

   Examine the wiring harness for potential short circuits to ground, open circuits, or damage from abrasion and heat.

4. 4

   With the key on and the sensor disconnected, test for a reference voltage being sent from the ECU to the sensor connector.

5. 5

   Measure the resistance across the sensor's terminals. A very low or near-zero resistance reading indicates an internally shorted sensor.

1. 1

   Safety First

   Ensure the engine is off and has cooled down to prevent burns from hot engine components and fluids. Disconnect the battery.

2. 2

   Locate the Sensor

   The engine oil temperature sensor's location can vary. It is typically found on the engine block, often near the oil filter housing or in an oil gallery. On some models, it may be a combined unit with the oil pressure sensor.

3. 3

   Prepare for Oil Loss

   Depending on the sensor's location, some engine oil may leak out when it is removed. Have a drain pan ready to catch any spills.

4. 4

   Remove the Old Sensor

   Disconnect the electrical connector from the sensor. Using the appropriate size wrench or socket, carefully unscrew and remove the old sensor from the engine.

5. 5

   Install the New Sensor

   Ensure the threads on the new sensor and the engine block are clean. If the new sensor comes with a pre-applied sealant or a new sealing washer, use it. Otherwise, apply a suitable thread sealant.

6. 6

   Tighten the New Sensor

   Screw the new sensor in by hand to avoid cross-threading, then tighten it to the manufacturer's specified torque. Do not overtighten, as this can damage the sensor or the engine block.

7. 7

   Reconnect and Finalize

   Reconnect the electrical connector to the new sensor. Top off the engine oil if any was lost during the replacement. Reconnect the battery.

8. 8

   Clear Fault Codes and Verify

   Start the engine and use a diagnostic tool or the tractor's onboard diagnostics to clear the ENG213 fault code. Operate the machine to ensure the code does not reappear and that the oil temperature reading is functioning correctly.