To prevent overheating and the costly damage that accompanies it, the ECU relies on sensors like the hydraulic oil temperature sensor. It sends electrical pulses to the computer with constantly updated temperature data. If this signal suddenly becomes intermittent, a DTC P0941 will be triggered.
How serious is the code?
The diagnostic code P0941 is very serious, as it means the hydraulic oil/transmission fluid temperature is no longer being constantly monitored. This leads to a number of driving problems, as well as the possibility of very serious damage.
Symptoms
Symptoms of a P0941 include:
- Check engine light
- Overheating
- Irregular vehicle behavior
- Limp mode
Causes
- Damaged wiring and/or connectors
- Faulty hydraulic oil temperature sensor
- Dirty or low hydraulic fluid
How to diagnose the code?
The first thing to do when trying to diagnose a P0941 OBDII fault code is to check the level and condition of the hydraulic fluid (it should be changed if it is excessively dirty or if there are metal fragments). Then, the condition of the wiring and connectors along the hydraulic oil temperature sensor circuit should be checked for signs of damage and corrosion. The sensor itself may need to be tested, as well as the ECU.
What repairs will fix P0941?
- Repair damaged wiring and/or connectors
- Replace the hydraulic oil temperature sensor
- Change the hydraulic fluid
- Reprogram or replace the ECU