What Is the P0711 Code?
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A P0711 code indicates a transmission problem involving sensor failures and pressure issues. This code specifically points to a problem with the transmission fluid temperature circuit.
Code P0711 stands for “Transmission Fluid Temperature Circuit A Range/ Performance.” The code means the transmission fluid temperature is higher than the recommended operating range. It’s a signal from the powertrain control module (PCM) indicating that your transmission is overheating.
This may or may not be correct, which we’ll dig into later. What is true, however, is that you should look into diagnosing this code as soon as possible.
More about the P0711 code
This code applies to vehicles with a transmission fluid temperature (TFT) sensor. Even though the code may be generic, repairs vary among manufacturers.
The TFT sensor signals the powertrain control module (PCM) about changes in shift points, line pressure, and torque converter clutch (TCC) control. You can find this sensor in the transmission oil pan. The PCM sends a reference voltage of 5 volts to the TFT, and the amount of signal returned will depend on the degree of change in the transmission fluid temperature.
TFT sensors are a kind of negative temperature coefficient (NTC) thermistor. This sensor’s internal resistance correlates inversely to the temperature of the transmission fluid. This means that the TFT sensor signal voltage decreases when the transmission fluid temperature rises and vice versa.
A code P0711 occurs when the PCM encounters problems with the transmission fluid temperature sensor. This can be triggered when the transmission fluid temperature increases beyond a preset value.
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What Are the Symptoms of a P0711 Code?
Things that you may encounter with a P0711 code include an illuminated check engine or warning light, smells or smoke coming from an overheating transmission fluid, smoke originating from the transmission, gear slippage, stuck gear, or activation of “limp mode.”
What Are Some Causes of a P0711 Code?
A P0711 code may be caused by low transmission fluid volume, contaminated transmission fluid, a faulty transmission temperature sensor, and a defective PCM.
How Serious Is the P0711 Code?
A P0711 code is a very serious problem. An overheating transmission should not be ignored because it could lead to complete failure, resulting in a costly rebuild. You should immediately bring your vehicle to your local mechanic for a thorough diagnosis and repair because the car is unfit for driving on the road.
Can I Still Drive with a P0711 Code?
Once this code is activated and symptoms start showing, you should immediately cease driving the vehicle and tow it to a qualified mechanic for diagnosis and repair.
How Easy Is It to Diagnose a P0711 Code?
A P0711 code lets the mechanic know there is a transmission problem. The transmission fluid volume is checked to see if it meets the manufacturer’s recommended levels. The fluid is further assessed for quality.
The transmission pan is also inspected for debris or leaks. If any debris is found, then it could mean a complete transmission overhaul.
A visual inspection is performed on the wiring and connectors to check for any signs of damage, corrosion, or loose connections.
The transmission temperature sensor is then disconnected and tested to determine if it retains the reference voltage and sensor resistance set by the manufacturer for the specific make and model.
The PCM electrical connector is removed to test for resistance and check for the integrity of the circuit between the temperature sensor and the PCM.
How Difficult Is It to Inspect a P0711 Code?
Diagnosing a P0711 code can be difficult since the root of the problem may have various causes. It will also be a challenge if you do not have detailed knowledge of your vehicle’s recommended voltage and resistance settings. It is best to consult an experienced mechanic or expert technician to determine where the issue originates.
Need Additional Help with Your P0711 Code?
Learn more about your vehicle using Technical Service Bulletins (TSB) specific to your make and model. This can guide you in troubleshooting and avoid wasting your time. Taking your vehicle to experienced mechanics for proper diagnosis and repair is recommended.
Use Kelley Blue Book to find a repair shop in your area. This makes fixing your car easier and more convenient, no matter what the problem may be.
If you are a DIY mechanic who wants to learn more about error codes and how to fix them, then the KBB OBD-II database provides detailed information that could help you better understand your car.
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