In order to avoid overheating and the expensive damage that goes along with it, the ECU relies on sensors like the hydraulic oil temperature sensor. It sends electrical pulses back to the computer with constantly updated temperature data. If this signal suddenly becomes intermittent, a P0941 DTC will be triggered.
How Serious is the Code?
The P0941 diagnostic trouble code is very serious, because it means the hydraulic oil/transmission fluid temperature is no longer being constantly monitored. In lead to a number of drivability problems, as well as the potential for some very serious damage.
Symptoms of a P0941 include:
- Check engine light
- Erratic vehicle behavior
- Limp Mode
- Damaged wiring and/or connectors
- Failed hydraulic oil temperature sensor
- Dirty or low level hydraulic fluid
How to Diagnose the Code?
The first thing that should be done when trying to diagnose a P0941 OBDII trouble code, is to check the level and condition of the hydraulic fluid (it should be changed if it’s excessively dirty or there are metal fragments present). Next, 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, along with the ECU.
What Repairs Will Fix P0941?
- Repair damaged wiring and/or connectors
- Replace hydraulic oil temperature sensor
- Change hydraulic fluid
- Reprogram or replace ECU