P0712 2018 GMC Sierra Code - Transmission Fluid Temperature Sensor Circuit Low Voltage
Quick Answer
The P0712 code for a 2018 GMC Sierra indicates an issue with the Transmission Fluid Temperature Sensor Circuit registering low voltage. Common causes include Faulty Transmission Fluid Temperature Sensor: The most common cause of a P0712 code is a malfunctioning transmission fluid temperature sensor, Wiring Issues: Corroded or damaged wiring connecting the transmission fluid temperature sensor to the ECM can result in low voltage readings, ECM Malfunction: A malfunctioning engine control module can also cause the sensor circuit to register low voltage. 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
- P0712 2018 GMC Sierra indicates Transmission Fluid Temperature Sensor Circuit Low Voltage.
- Common causes
- Common causes include Faulty Transmission Fluid Temperature Sensor: The most common cause of a P0712 code is a malfunctioning transmission fluid temperature sensor, Wiring Issues: Corroded or damaged wiring connecting the transmission fluid temperature sensor to the ECM can result in low voltage readings, ECM Malfunction: A malfunctioning engine control module can also cause the sensor circuit to register low voltage.
- 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 P0712 2018 GMC Sierra Description
The P0712 code for a 2018 GMC Sierra indicates an issue with the Transmission Fluid Temperature Sensor Circuit registering low voltage. The transmission fluid temperature sensor is a crucial component in monitoring the temperature of the transmission fluid. This information is essential for ensuring the proper functioning and longevity of the transmission system. When the sensor detects a low voltage signal, it can lead to various complications in the vehicle's performance.
Common Causes of P0712 2018 GMC Sierra
- Faulty Transmission Fluid Temperature Sensor: The most common cause of a P0712 code is a malfunctioning transmission fluid temperature sensor.
- Wiring Issues: Corroded or damaged wiring connecting the transmission fluid temperature sensor to the ECM can result in low voltage readings.
- ECM Malfunction: A malfunctioning engine control module can also cause the sensor circuit to register low voltage.
- Low Transmission Fluid Level: Insufficient transmission fluid can affect the sensor's readings and trigger a P0712 code.
Symptoms of P0712 2018 GMC Sierra
- Check Engine Light: The most common symptom associated with a P0712 code is the illumination of the Check Engine Light on the vehicle's dashboard.
- Erratic Shifting: The transmission may exhibit erratic shifting behavior, such as delayed or harsh shifts, due to incorrect temperature readings.
- Decreased Fuel Efficiency: A faulty transmission fluid temperature sensor can lead to suboptimal transmission performance, resulting in decreased fuel efficiency.
- Transmission Overheating: In severe cases, the transmission may overheat due to incorrect temperature readings, potentially causing damage to internal components.
How to Fix P0712 2018 GMC Sierra
- Diagnosis: The first step in addressing a P0712 code is to diagnose the issue by using a scan tool to read the code and determine the specific cause of the low voltage signal.
- Sensor Replacement: If the transmission fluid temperature sensor is found to be faulty, it will need to be replaced with a new sensor to restore proper functionality.
- Wiring Inspection: Check the wiring harness connecting the sensor to the ECM for any signs of damage or corrosion. Repair or replace any damaged wiring as needed.
- ECM Testing: If the sensor and wiring are in good condition, the engine control module may need to be tested or replaced if it is determined to be causing the low voltage signal.
- Clearing Codes: Once the repairs are completed, clear the diagnostic trouble codes from the ECM to reset the system and ensure the issue has been resolved.
Cost to Fix P0712 2018 GMC Sierra
The cost of repairing a P0712 code on a 2018 GMC Sierra can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. Typically, replacing a transmission fluid temperature sensor can cost between $100 to $200 for the parts, with additional labor costs ranging from $100 to $200. If wiring repairs or ECM replacement are required, the overall cost can increase accordingly.
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