The P0940 trouble code indicates a high voltage condition in the hydraulic oil temperature sensor circuit. This sensor is responsible for monitoring the temperature of the hydraulic oil in the transmission system. A high voltage condition in this circuit can lead to inaccurate temperature readings, potentially causing transmission issues.
P0940 Hydraulic Oil Temperature Sensor Circuit High
Code symptoms P0940.
1. Fluctuating transmission temperature gauge readings.
2. Transmission overheating.
3. Erratic shifting.
4. Reduced transmission performance.
5. Check Engine Light illuminated.
Causes of the code P0940.
1. Faulty hydraulic oil temperature sensor.
2. Wiring or connector issues in the hydraulic oil temperature sensor circuit.
3. High transmission fluid level.
4. Hydraulic system leaks.
5. Internal transmission problems.
Code Solutions P0940.
1. Inspect the hydraulic oil temperature sensor for any signs of damage or malfunction and replace if necessary.
2. Check the wiring and connectors in the hydraulic oil temperature sensor circuit for damage or corrosion. Repair or replace any damaged wiring or connectors.
3. Ensure the transmission fluid level is within the specified range.
4. Inspect the hydraulic system for leaks and repair as needed.
5. If other transmission issues are suspected, perform a thorough diagnosis or seek professional assistance.