P0937 - Hydraulic Oil Temperature Sensor Circuit

The TCM detected an implausible hydraulic oil temperature signal, which can be caused by a failing sensor, wiring issue, or a real transmission temperature problem.

Code Overview

The TCM detected an implausible hydraulic oil temperature signal, which can be caused by a failing sensor, wiring issue, or a real transmission temperature problem.

Common Causes

• Faulty hydraulic oil temperature sensor
• Wiring or connector damage
• Poor sensor ground or reference
• Actual transmission overheating

Diagnostic Steps

1. Check transmission fluid level and condition
2. Inspect the transmission connector and harness for oil intrusion or damage
3. Compare sensor readings to commanded values with a scan tool
4. Do not condemn the transmission before verifying power, ground, and reference signals

Likely Repairs & Cost Guides

Use test results to confirm the fault before pricing the repair.

Related OBD Codes

Browse the closest code-family pages when the same fault pattern often shows up nearby.

Next Steps

Move from the code to a diagnosis path, then into repair pricing once the fault is confirmed.