What Does P0713 Mean?
The transmission fluid temperature sensor A circuit is reporting a high voltage input, indicating extremely high resistance (open circuit) or a disconnected sensor. The TCM interprets this as an abnormally cold reading (since NTC sensors have high resistance when cold). The driver may notice harsh cold-start shifts that persist even after the vehicle warms up.
Common Causes
30%
Open circuit in the TFT sensor (failed sensor element)
30%
Disconnected or corroded sensor connector
20%
Broken or open wire in the signal circuit between sensor and TCM
15%
Open ground circuit preventing current flow through the sensor
5%
TCM connector damage or pin spread
Diagnostic Steps
1
Monitor TFT sensor temperature via live data. If it reads extremely cold (e.g., -40°F) regardless of actual conditions, the circuit is open.
2
Inspect the TFT sensor connector — ensure it is fully seated and locked. Check for backed-out pins, corrosion, or broken locking tabs.
3
Disconnect the sensor and measure resistance. At room temperature, expect 2,000-3,000 ohms (NTC type). An infinite/OL reading means the sensor is open and needs replacement.
4
If the sensor reads correctly, check continuity of the signal and ground wires from the sensor connector to the TCM connector. Any open circuit pinpoints the damaged wire.
5
Briefly jumper the signal and ground pins at the sensor connector — the scan tool should show a very high temperature reading, confirming the circuit to the TCM is intact.
Estimated Repair Cost
$80 - $350
Parts + labor, varies by vehicle and location
The transmission fluid temperature sensor A circuit is reporting a high voltage input, indicating extremely high resistance (open circuit) or a disconnected sensor. The TCM interprets this as an abnormally cold reading (since NTC sensors have high resistance when cold). The driver may notice harsh c...
The most common cause of P0713 (Transmission Fluid Temperature Sensor A Circuit High Input) is: Open circuit in the TFT sensor (failed sensor element)
Typical repair costs for P0713 range from $80 to $350, depending on the vehicle, location, and whether you do it yourself or go to a shop.
The vehicle can be driven, but the TCM will default to a cold-start shift strategy, resulting in firmer shifts and potentially increased transmission wear. The transmission also cannot detect overheating, so avoid heavy loads. Repair at earliest convenience.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0713 to identify the root cause.
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Quick Info
Category
Powertrain
System
Transmission
Difficulty
Type
Generic (SAE)
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