P0939 OBD-II: Hydraulic Oil Temperature Sensor Circuit Low
P0939 Severity
Will P0939 go away on its own?
Once the vehicle's onboard system no longer detects the issue, most codes will disappear on their own. If your vehicle still has this code, however, it should be properly diagnosed to avoid a more serious problem.
For a proper diagnosis, RepairPal Certified shops have the equipment, tools, and expertise.
Moderate severity codes might not threaten the vehicle's safety or functionality immediately, but you should still get it diagnosed within a reasonable time frame to keep your car running well.
What causes OBD-II fault code P0939?
The clutch uses hydraulic pressure to engage and disengage the clutch as well as shift gears. The Hydraulic Oil Temperature Sensor tells the Transmission Control Module (TCM) the temperature of the system. If the sensor sends back an implausible signal, code P0939 is stored.
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OBD II Fault Code
- OBD II P0939
OBD-II Code Transmission Control Module (TCM) failure is defined as a Hydraulic Oil Temperature Sensor Circuit Low
The clutch uses hydraulic pressure to engage and disengage the clutch as well as shift gears. The Hydraulic Oil Temperature Sensor tells the Transmission Control Module (TCM) the temperature of the system. If the sensor sends back an implausible signal, code P0939 is stored.
Common Problems That Trigger the P0939 Code
- Hydraulic oil temperature sensor failure
- Transmission Control Module (TCM) failure
- Wiring issue
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