Hydraulic Oil Temperature Sensor Circuit High

Where it lives

For P0940, the sensor sits on the circuit this code reports. The description of P0940 reports a fault at the sensor.

Check these first

• An open in the sensor signal wire
• A failed hydraulic oil temperature sensor
• A poor or corroded sensor connector
• Actual hydraulic oil that is running hot
• A fault in the control module input

What to do next

1. Inspect the sensor and connector
2. Check the signal circuit for an open
3. Verify hydraulic oil level and condition
4. Compare the sensor reading with a scan tool to actual fluid temperature
5. Replace the sensor if the reading is out of range
6. Clear the code and retest

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