P0937 Hydraulic Oil Temperature Sensor Circuit

P0937 points to a hydraulic oil temperature sensor circuit fault. The controller cannot trust the temperature feedback for the hydraulic system.

Code status

Needs verification

Not yet verified against SAE J2012_202509 / J2012DA. Treat unverified rows as a lookup aid, not repair authority.

System: Transmission
Scope: iso-sae-controlled-p0
Standard: SAE J2012 / ISO 15031-6
Source: legacy-import

Diagnostic boundary

A diagnostic trouble code reports that a monitored test failed. It does not prove one specific part is bad, and manufacturer logic can add vehicle-specific conditions.

Do not diagnose pressure-control behavior until the hydraulic oil temperature signal is plausible.

Useful checks before replacing parts

Compare hydraulic oil temperature with transmission fluid temperature, ambient temperature, and sensor data after a cold soak.
Check sensor signal, reference voltage, ground, connector condition, continuity, internal harness routing, and fluid intrusion.
Review whether pressure, pump, actuator, or shift-control faults appear when the temperature signal is implausible.

Related OBD-II codes

These nearby transmission entries can help compare wording and fault area. They may share the same verification status as the source database.