P0939
Hydraulic Oil Temperature Sensor Circuit Low
P0939 is an OBD-II diagnostic trouble code meaning: Hydraulic Oil Temperature Sensor Circuit Low. Common causes: hydraulic oil temperature sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $17–56.
Symptoms
- Incorrect operation of the automatic transmission
- Increased noise during power steering operation
- Check Engine Light Illuminates
- Reduced hydraulic system efficiency
Causes
- Hydraulic oil temperature sensor malfunction
- Open or short circuit in the sensor circuit
- Poor contact in wiring connectors
- Problems with the engine control unit
- Contaminated or low hydraulic oil level
How to Fix
- Check the level and condition of the hydraulic oil
- Inspect the sensor circuit for damage
- Check sensor connectors and contacts
- Test hydraulic oil temperature sensor
- Replace sensor if necessary
Related codes
Error P0939 by Vehicle Brand
FAQ
What does the P0939 code mean?
P0939 is an OBD-II diagnostic trouble code that indicates: Hydraulic Oil Temperature Sensor Circuit Low
What causes a P0939 error code?
The most common causes of P0939 include: Hydraulic oil temperature sensor malfunction; Open or short circuit in the sensor circuit; Poor contact in wiring connectors; Problems with the engine control unit.
How do I fix a P0939 diagnostic trouble code?
To fix P0939: Check the level and condition of the hydraulic oil. Inspect the sensor circuit for damage. Check sensor connectors and contacts. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0939?
Yes, but get it checked soon
How much does it cost to fix P0939?
The estimated repair cost for P0939 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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