WOMS
P code powertrain Medium severity

P0941 Hydraulic Oil Temperature Sensor Circuit Intermittent

The OBD2 code P0941 indicates that there is an intermittent issue with the hydraulic oil temperature sensor circuit, which may affect the transmission's performance and operation

Definition

The OBD2 code P0941 indicates that there is an intermittent issue with the hydraulic oil temperature sensor circuit, which may affect the transmission's performance and operation

Common causes

  • Faulty hydraulic oil temperature sensor
  • Damaged wiring or connectors
  • Poor electrical connections
  • Short circuit in the sensor circuit
  • Open circuit in the sensor circuit
  • Faulty engine control module (ECM)
  • Corrosion in connectors or terminals
  • Fluid contamination or low fluid levels

Common misdiagnoses

  • Transmission fluid issues
  • Faulty transmission control module (TCM)
  • Wiring or connector problems
  • Faulty hydraulic oil temperature sensor
  • Transmission overheating
  • Low transmission fluid level
  • Faulty engine control module (ECM)
  • Incorrect transmission fluid type

Troubleshooting steps

  1. 1. Check for Additional Codes

    Use an OBD-II scanner to check for any other trouble codes that may be present. This can provide more context and help identify related issues

  2. 2. Inspect the Wiring and Connectors

    Visual Inspection: Check the wiring harness and connectors associated with the hydraulic oil temperature sensor for any signs of damage, corrosion, or loose connections

  3. 3. Repair or Replace

    If any issues are found, repair or replace the damaged wiring or connectors

  4. 4. Test the Hydraulic Oil Temperature Sensor

    Resistance Check: Use a multimeter to measure the resistance of the sensor. Compare the readings to the specifications provided in the vehicle’s service manual

  5. 5. Sensor Replacement

    If the sensor is faulty, replace it with a new one

  6. 6. Check the Power and Ground

    Voltage Check: Ensure that the sensor is receiving the correct voltage from the vehicle’s power supply

  7. 7. Ground Check

    Verify that the ground connection for the sensor is solid and free of corrosion

  8. 8. Inspect the Transmission Fluid

    Fluid Condition: Check the condition of the transmission fluid. If it is dirty or burnt, it may need to be changed

  9. 9. Fluid Level

    Ensure that the transmission fluid is at the correct level

  10. 10. Check for Short Circuits

    Use a multimeter to check for any short circuits in the wiring that could cause intermittent signals

  11. 11. Scan for Intermittent Issues

    If the problem is intermittent, it may be helpful to monitor the sensor data while driving to see if the issue can be replicated

  12. 12. Inspect Related Components

    Check other components related to the transmission and hydraulic system, such as the transmission control module (TCM) and any associated sensors

  13. 13. Clear Codes and Test Drive

    After performing repairs, clear the trouble codes using the OBD-II scanner and take the vehicle for a test drive to see if the code returns

  14. 14. Consult a Professional

    If the issue persists after performing these steps, it may be necessary to consult a professional mechanic or technician for further diagnosis. By following these troubleshooting steps, you should be able to identify and resolve the issue related to the P0941 code