P0713: Transmission Fluid Temperature Sensor A Circuit High Input

What does P0713 mean?

Transmission fluid temperature sensor A signal voltage is too high. On a typical thermistor circuit an open path looks extremely cold, so high input does not automatically mean the fluid is overheated.

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

Common causes

• Open temperature sensor or signal path
• Poor terminal contact
• Signal shorted to a reference supply

Symptoms

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

Diagnostic focus

Distinguish high electrical input from high temperature. Do not replace the transmission cooler solely because a circuit-high code is stored.

Can I keep driving with P0713?

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

• Check for a disconnected case plug or open sensor
• Compare cold-soak scan data with ambient
• Test circuit continuity and the sensor to the service chart

Sources & review

• OBD-Codes.com: P0713
• 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.