P0715 Malfunction of the electrical circuit of the turbine (torque converter) speed sensor “A”

P0715 – OBD-II Trouble Code Technical Description

Trouble code P0715 indicates a problem with the turbine (torque converter) speed sensor A signal.

What does the fault code mean P0715?

Trouble code P0715 indicates a problem with the signal that is sent between the engine control module (ECM) and the transmission control module (TCM). This code indicates possible problems with the automatic transmission input shaft speed sensor. When the sensor does not transmit the correct signal, the vehicle's computer cannot correctly determine the gear shift strategy, which can cause the transmission to malfunction.

Possible reasons

Some of the possible causes of the P0715 trouble code are:

• Faulty speed sensor (torque converter turbine sensor): The most common and obvious source of the problem is a malfunction of the automatic transmission input shaft speed sensor.
• Damaged or broken wiring: The wiring between the speed sensor and the transmission control module may be damaged, broken, or incorrectly connected, which can result in a P0715 code.
• Problems with connectors or connections: Incorrect connections or corrosion on the connectors can also cause problems with signal transmission between the sensor and the control module.
• Faulty Transmission Control Module (TCM): Although this is a rarer cause, a faulty TCM can also result in a P0715 code.
• Transmission problems: Certain problems with the transmission itself, such as breakdown, clogging, or other mechanical failures, can cause incorrect signals from the speed sensor.

To accurately identify the cause of error P0715, additional diagnostics may be required using specialized automotive service equipment.

What are the symptoms of trouble code P0715?

Symptoms when you have a P0715 trouble code can vary depending on the specific problem and vehicle characteristics, some of the possible symptoms are:

• Gearshift problems: The vehicle may have problems shifting gears, such as delays in shifting, jerking, or unusual sounds when shifting gears.
• Speedometer not working: Since the speed sensor is also used to calculate the vehicle's speed, a faulty sensor may result in the speedometer not working.
• Irregular engine operation: Engine malfunction or changes in engine performance, such as improper idling or irregular idle speed, may be a result of the P0715 code.
• Unusual dashboard readings: A warning light may appear on the dashboard indicating a problem with the transmission or speed system.
• Automatic car mode: The car may be stuck in one gear or shift only in automatic mode, without the option of manual shifting.
• Turning on the emergency indicator (Check Engine): If trouble code P0715 activates the Check Engine Diagnostic System, the “Check Engine” or “Service Engine Soon” light may illuminate on the instrument panel.

If you experience these symptoms or receive a P0715 code, it is recommended that you take it to a qualified auto mechanic for diagnosis and repair.

How to diagnose a fault code P0715?

To diagnose DTC P0715, follow these steps:

1. Connect the diagnostic scanner: Use a diagnostic scanner to read error codes and view live transmission data. This will help identify the specific problem and determine which components may be affected.
2. Check wiring and connectors: Carefully inspect the wiring and connectors connecting the speed sensor to the transmission control module. Make sure the wires are intact, not broken or damaged, and that the connectors are secure and free of corrosion.
3. Check the speed sensor: Use a multimeter to check the resistance of the speed sensor. Compare your values ​​to the manufacturer's recommended specifications.
4. Check the level and condition of the transmission fluid: Check the level and condition of the transmission fluid, as its quality and level can also affect the performance of the sensor and the transmission as a whole.
5. Perform an idle test: Start the engine and check if the speed sensor works at idle. This will determine whether the sensor operates under normal engine operating conditions.
6. Additional tests and diagnostics: Perform additional tests as necessary, such as checking the sensor supply voltage and ground, and testing the powertrain control module.

Diagnostic errors

When diagnosing DTC P0715, the following errors may occur:

• Incorrect interpretation of data: One of the mistakes may be incorrect interpretation of data obtained from a diagnostic scanner or other tools. Misunderstanding the parameters and values ​​may lead to incorrect identification of the cause of the problem.
• Skipping important diagnostic steps: Failure to complete all required diagnostic steps may result in potential causes of P0715 being missed. Failure to properly check the wiring, sensor, and other components may result in the cause of the problem being incorrectly determined.
• Faulty tools: Using faulty or inappropriate diagnostic tools may lead to erroneous results. For example, incorrect interpretation of multimeter values ​​or incorrect use of a diagnostic scanner can distort diagnostic data.
• Ignoring Hidden Issues: Sometimes the cause of the P0715 code may be hidden or not obvious. Missing hidden problems, such as transmission cooling system problems or TCM faults, can lead to misdiagnosis and incorrect repairs.
• Incorrect repair: Mistakes in choosing a repair method or replacing components can lead to problems in the future. Improperly replacing a sensor or faulty module may not resolve the root of the problem, causing P0715 to reappear.

To minimize errors when diagnosing trouble code P0715, it is recommended to use professional equipment and follow the recommendations of the car manufacturer.

How serious is the fault code? P0715?

The severity of the P0715 trouble code may vary depending on the specific cause and vehicle operating conditions. In general, this error indicates problems with the automatic transmission input shaft speed sensor, which can lead to a number of problems:

• Gearshift problems: A malfunctioning speed sensor may result in incorrect gear shifting, which may affect vehicle performance and driving safety.
• Increased transmission wear: Improper gear shifting or operation of the transmission under incorrect conditions can lead to increased wear on transmission components and early failure.
• Loss of transmission control: In some cases, if the problem persists, a complete loss of transmission control may occur, resulting in an inability to shift gears and stalling on the road.

In general, although the P0715 code is not fatal, it can lead to serious problems with the functioning of the transmission and driving safety. Therefore, it is recommended that you contact a qualified technician for diagnosis and repair as soon as possible to avoid further problems.

What repair will help eliminate the code? P0715?

Resolving the P0715 trouble code may require different repairs depending on the specific cause of the problem, several possible repair options are:

1. Replacing the speed sensor (torque converter turbine sensor): If the problem is related to a malfunction of the sensor itself, then replacement may be necessary. This is one of the most common and easiest ways to resolve the P0715 code.
2. Repairing or replacing damaged wires or connectors: If the error is caused by damaged wiring or connectors between the speed sensor and the transmission control module, the damaged components will need to be repaired or replaced.
3. Diagnostics and repair of the transmission control module (TCM): In rare cases, the problem may be due to a problem with the transmission control module itself. In this case, it may need to be diagnosed and repaired or replaced.
4. Checking and servicing the transmission: Sometimes shifting problems can be caused not only by the speed sensor, but also by other components of the transmission. Checking and servicing the transmission itself, such as changing the filter and transmission fluid, can also help resolve the P0715 code.
5. Additional diagnostic procedures: In some cases, additional diagnostic procedures may be required to identify hidden problems, such as transmission cooling problems or other electrical problems.

Repairing the P0715 error requires careful diagnosis and determination of the specific cause of the problem, so it is recommended that you contact qualified auto mechanics or service centers to diagnose and perform the necessary repairs.

Easy to Fix Code P0715 = Input/Turbine Speed Sensor

P0715 – Brand-specific information

Trouble code P0715 refers to common transmission error codes and is applicable to various brands of cars, several brands of cars with interpretations of the P0715 code:

• Toyota / Lexus / Scion: Turbine Speed ​​Sensor.
• Honda/Acura: Automatic transmission input shaft speed sensor (Input Shaft Speed ​​Sensor).
• Ford: Automatic transmission input shaft speed sensor (Transmission Input Speed ​​Sensor).
• Chevrolet / GMC / Cadillac: Automatic transmission input shaft speed sensor (Transmission Input Speed ​​Sensor).
• Nissan / Infiniti: Turbine Revolution Sensor.
• BMW/Mini: Automatic transmission input shaft speed sensor (Transmission Input Speed ​​Sensor).
• Mercedes Benz: Automatic transmission input shaft speed sensor (Transmission Input Speed ​​Sensor).
• Volkswagen / Audi / Porsche: Automatic transmission input shaft speed sensor (Transmission Input Speed ​​Sensor).
• Volvo: Automatic transmission input shaft speed sensor (Transmission Input Speed ​​Sensor).
• Hyundai/Kia: Automatic transmission input shaft speed sensor (Input/Turbine Speed ​​Sensor).

These are just a few examples of car brands that the P0715 code may apply to. Each manufacturer may use different terms and definitions for the automatic transmission input shaft speed sensor. To determine the exact meaning of the P0715 code for a specific vehicle make and model, it is recommended that you consult the manufacturer's documentation or service manual.