P0713 2018 GMC Sierra Code - Transmission Fluid Temperature Sensor Circuit High Voltage
Quick Answer
The P0713 diagnostic trouble code (DTC) for a 2018 GMC Sierra relates to the transmission fluid temperature sensor circuit reporting a high voltage. Common causes include Faulty Transmission Fluid Temperature Sensor: The sensor itself may be malfunctioning, providing incorrect readings to the TCM, Wiring or Connector Issues: Corrosion, damage, or poor connections in the wiring harness or connectors can disrupt the signal from the sensor to the TCM, Transmission Control Module (TCM) Malfunction: A problem with the TCM, which processes the sensor data and controls transmission functions, can lead to erroneous voltage readings. 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 Transmission Fluid Temperature Sensor: The sensor itself may be malfunctioning, providing incorrect readings to the TCM, Wiring or Connector Issues: Corrosion, damage, or poor connections in the wiring harness or connectors can disrupt the signal from the sensor to the TCM, Transmission Control Module (TCM) Malfunction: A problem with the TCM, which processes the sensor data and controls transmission functions, can lead to erroneous voltage readings.
- 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 P0713 2018 GMC Sierra Description
The P0713 diagnostic trouble code (DTC) for a 2018 GMC Sierra relates to the transmission fluid temperature sensor circuit reporting a high voltage. This sensor is responsible for monitoring the temperature of the transmission fluid, which is crucial for the proper function and longevity of the transmission system. When the sensor detects a high voltage signal, it indicates that the transmission fluid temperature is higher than normal, potentially leading to issues with transmission performance and efficiency.
Common Causes of P0713 2018 GMC Sierra
- Faulty Transmission Fluid Temperature Sensor: The sensor itself may be malfunctioning, providing incorrect readings to the TCM.
- Wiring or Connector Issues: Corrosion, damage, or poor connections in the wiring harness or connectors can disrupt the signal from the sensor to the TCM.
- Transmission Control Module (TCM) Malfunction: A problem with the TCM, which processes the sensor data and controls transmission functions, can lead to erroneous voltage readings.
- Overheating Transmission: Actual overheating of the transmission fluid due to driving conditions, such as towing heavy loads or driving in extreme heat, can trigger the high voltage signal.
- Software or Calibration Issues: Occasionally, software glitches or calibration errors within the TCM can cause the transmission fluid temperature sensor to report high voltage readings.
Symptoms of P0713 2018 GMC Sierra
- Check Engine Light: The most common symptom associated with the P0713 code is the illumination of the check engine light on the vehicle's dashboard.
- Transmission Overheating Warning: Some vehicles may display a warning message indicating that the transmission is overheating.
- Erratic Shifting: The transmission may exhibit erratic shifting patterns, such as delayed or harsh shifts.
- Decreased Fuel Efficiency: A high transmission fluid temperature can lead to decreased fuel efficiency as the transmission works harder to compensate for the elevated temperature.
- Transmission Slipping: In severe cases, the transmission may slip or fail to engage properly due to the high fluid temperature.
How to Fix P0713 2018 GMC Sierra
- Diagnostic Scanning: Use a diagnostic scanner to retrieve the trouble codes and verify the presence of the P0713 code.
- Inspection: Inspect the transmission fluid temperature sensor, wiring, and connectors for any visible damage, corrosion, or loose connections.
- Sensor Replacement: If the sensor is faulty, replace it with a new, OEM-approved sensor to ensure accurate temperature readings.
- Wiring Repair: Repair any damaged wiring or connectors and ensure proper connections to eliminate signal interference.
- TCM Testing: Test the TCM for proper functionality and address any issues with software updates or replacements if necessary.
Cost to Fix P0713 2018 GMC Sierra
The typical repair costs for resolving the P0713 code in a 2018 GMC Sierra can vary depending on the specific cause of the issue. On average, the cost of replacing a transmission fluid temperature sensor ranges from $100 to $200, including parts and labor. Additional costs may apply if wiring repairs or TCM replacement are required. It is recommended to consult with a qualified mechanic or auto repair shop for an accurate estimate based on the individual circumstances of the vehicle. Keep in mind that diagnostic time and labor rates can vary, so it's advisable to inquire about these details before proceeding with the repair.
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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.
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