AutoCodesGMC – P0713 2018 GMC Sierra

P0713 2018 GMC Sierra Code - Transmission Fluid Temperature Sensor Circuit High Voltage

Quick Answer

The Automatic Transmission Fluid Temperature (TFT) sensor is a resistor, or thermistor, which changes value based on temperature. Common causes include Faulty Control Solenoid Valve Assembly, Control Solenoid Valve Assembly harness is open or shorted, Control Solenoid Valve Assembly circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0713 2018 GMC Sierra indicates Transmission Fluid Temperature Sensor Circuit High Voltage.
Common causes
Common causes include Faulty Control Solenoid Valve Assembly, Control Solenoid Valve Assembly harness is open or shorted, Control Solenoid Valve Assembly circuit poor electrical connection.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code Popularity 311
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 29, 2022
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Code P0713 2018 GMC Sierra Description

The Automatic Transmission Fluid Temperature (TFT) sensor is a resistor, or thermistor, which changes value based on temperature. The sensor has a negative temperature coefficient. This means that as the temperature increases, the resistance decreases, and as the temperature decreases, the resistance increases. The transmission fluid temperature sensor is located inside the Transmission Control Module assembly which has no serviceable parts. The transmission fluid temperature sensor provides transmission fluid temperature information to the Transmission Control Module. This fault is handled inside the Transmission Control Module and no external circuits are involved.
The Diagnostic Trouble Code (DTC) will be set if the transmission fluid temperature is 174°C (345°F) or greater for 1 min.
OBDII Code P0713 2018 GMC Sierra - Transmission Fluid Temperature Sensor Circuit High Voltage - AutoCodes.com
P0713 2018 GMC Sierra Code - Transmission Fluid Temperature Sensor Circuit High Voltage

What are the Possible Causes of the DTC P0713 2018 GMC Sierra?

  • Faulty Control Solenoid Valve Assembly
  • Control Solenoid Valve Assembly harness is open or shorted
  • Control Solenoid Valve Assembly circuit poor electrical connection

How to Fix the DTC P0713 2018 GMC Sierra?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0713 2018 GMC Sierra code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0713 2018 GMC Sierra code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0713 2018 GMC Sierra Code

What does the OBDII code P0713 mean for a 2018 GMC Sierra?

P0713 indicates that the transmission fluid temperature (TFT) sensor circuit is sending a high voltage signal to the powertrain control module (PCM), suggesting an issue with the sensor or its circuit.

What are the common symptoms of code P0713 in a 2018 GMC Sierra?

Symptoms may include erratic transmission shifting, poor fuel efficiency, transmission overheating, or the check engine light being illuminated.

What causes the P0713 code in a 2018 GMC Sierra?

Common causes include a faulty TFT sensor, damaged wiring or connectors in the sensor circuit, low or contaminated transmission fluid, or a malfunctioning PCM.

Can driving with code P0713 damage my 2018 GMC Sierra?

Yes, prolonged driving with this code can lead to transmission overheating or damage due to improper shifting, so it should be addressed promptly.

How do you diagnose code P0713 in a 2018 GMC Sierra?

Diagnosis typically involves inspecting the TFT sensor, checking wiring and connectors for damage, verifying transmission fluid condition, and performing voltage tests on the sensor circuit.

Can low transmission fluid cause the P0713 code?

Yes, low or contaminated transmission fluid can affect the TFT sensor readings and trigger the P0713 code.

How do you fix code P0713 on a 2018 GMC Sierra?

Repairs may include replacing the TFT sensor, repairing damaged wiring or connectors, refilling or replacing transmission fluid, or reprogramming the PCM if necessary.

Is replacing the transmission fluid temperature sensor expensive?

The cost varies depending on labor rates and parts pricing, but replacing the TFT sensor is generally not overly expensive compared to other transmission-related repairs.

Can a faulty PCM cause the P0713 code?

While rare, a malfunctioning PCM could potentially misinterpret sensor signals and cause this code. It should be checked after ruling out other causes.

How can I prevent the P0713 code from occurring on my 2018 GMC Sierra?

Regular maintenance, including checking transmission fluid levels and condition, inspecting wiring for damage, and addressing issues promptly, can help prevent this code.

Discuss the causes and fixes for P0713 2018 GMC Sierra OBDII Code

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