Transmission Fluid Temperature Sensor C Circuit Intermittent

Where it lives

For P274E, the circuit described runs through the sensor. The description of P274E reports a fault at the sensor.

Check these first

• An intermittent open in the transmission fluid temperature sensor C wiring
• A loose transmission fluid temperature sensor C connector
• A failing transmission fluid temperature sensor C
• Chafed transmission fluid temperature sensor C wiring

What to do next

1. Read transmission fluid temperature sensor C on a scan tool
2. Wiggle test the transmission fluid temperature sensor C harness while watching data
3. Test the transmission fluid temperature sensor C circuit for intermittent faults
4. Check the transmission fluid temperature sensor C connector pins
5. Replace transmission fluid temperature sensor C if the fault follows the harness
6. Clear the code and retest

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