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TuningBot DTC Database · v4.37.15

P0939 Hydraulic Oil Temperature Sensor Circuit Low Input

Generic (OBD-II) interpretation in the TuningBot DTC database.

P · PowertrainTransmissionOBD2

What P0939 means

P0939
Hydraulic Oil Temperature Sensor Circuit Low Input Generic · transmission Data confidence 90%

The control module detected that the signal in the Hydraulic Oil Temperature circuit stayed below the expected operating range.

Possible causes

  • Wiring
  • short to earth
  • hydraulic oil temperature sensor
  • ECM/PCM/TCM

Related and nearby codes

How to read P0939

P

Powertrain: engine, transmission and driveline systems.

0

Generic SAE-standard code: same meaning on every make.

939

Specific fault index within the subsystem.

Frequently asked questions about P0939

What does P0939 mean?

Hydraulic Oil Temperature Sensor Circuit Low Input. The control module detected that the signal in the Hydraulic Oil Temperature circuit stayed below the expected operating range.

Is P0939 generic or manufacturer-specific?

P0939 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P0939 at file level?

If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.

Other file services

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