P0937: Hydraulic Oil Temperature Sensor Circuit OBD-II Trouble Code

The transmission of hydraulic oil temperature sensor is responsible for telling the ECU the current temperature of the ATF. If there is a problem with the information coming through the sensor’s circuit, a P0937 DTC will be saved.

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What Transmission Do I Have?

How Serious is the Code?

The P0937 diagnostic trouble code is obviously pretty serious, because the ECU must know the current operating temperature of the transmission oil, in order to avoid overheating and serious internal damage.

Symptoms

Symptoms of a P0937 include

  • Check engine light
  • Overheating
  • Erratic vehicle behavior
  • Limp Mode

Causes

  • Damaged wiring or connectors
  • Hydraulic oil temperature sensor failure
  • Low or dirty fluid

How to Diagnose the Code?

Since the P0937 OBDII trouble code is primarily an electrical fault, the diagnostic procedure should begin with examining the wiring and connectors along the hydraulic oil temperature sensor circuit. The sensor itself may also need to be checked, along with the condition of the fluid/oil.

What Repairs Will Fix P0937?

  • Repair damaged wiring and/or connectors
  • Replace hydraulic oil temperature sensor
  • Change fluid
  • Reprogram or replace ECU

Related Codes

N/A

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What Transmission Do I Have?