P0710: Transmission Fluid Temperature Sensor A Circuit

What does P0710 mean?

The transmission fluid temperature sensor A circuit is malfunctioning. The controller uses this temperature to set shift strategy, line pressure, and torque-converter clutch operation, so a bad input can change how the transmission behaves.

Generic OBD-II definition: Transmission Fluid Temperature Sensor A Circuit. Confirm applicability in your vehicle service information.

Common causes

• Faulty fluid-temperature sensor
• Damaged internal or external transmission wiring
• Connector contamination or a controller supply fault

Symptoms

• Harsh or delayed shifts
• Torque-converter clutch behavior changes
• Limp mode or transmission warning

Diagnostic focus

The temperature sensor may be inside the transmission or integrated into a harness/module. Verify the design before ordering an external sensor or removing the pan.

Can I keep driving with P0710?

Severity: Medium Avoid towing, steep loads, and prolonged driving until diagnosed. Stop and arrange recovery if the transmission slips, loses drive, overheats, or bangs into gear; driving through slip can cause further damage.

If the check engine light is flashing or the car runs badly, stop driving and have it checked.

Typical fixes

• Inspect the case connector and accessible harness
• Check the temperature sensor circuit to specification
• Verify reported temperature against actual cold/warm conditions

Sources & review

• OBD-Codes.com: P0710
• TroubleCodes.net: generic code definitions

Definitions and diagnostic background checked 2026-11-06. Generic guidance, not a substitute for the service procedure for your exact year, engine, and transmission.