P0715: Input/Turbine Speed Sensor Circuit Malfunction
Quick Answer
Not safe to drive
P0715 means the transmission control module is not receiving a valid signal from the input speed sensor, also called the turbine speed sensor. This sensor measures how fast the transmission input shaft is spinning, which is essential for calculating proper gear changes.
- Severity
- High · Transmission
- Estimated repair cost
- From €100 to €1350+, varies by vehicle
Scan your own car in about 60 seconds: see whether P0715 is really what it has, how urgent it is, and what the fix should cost. Free on iPhone and Android with an ELM327 adapter (Bluetooth LE on iPhone).
Get Skanyx freeWhat does P0715 mean?
P0715 is a transmission-related diagnostic trouble code classified as high severity. When your vehicle's ECU detects this condition, it stores P0715 and illuminates the check engine light.
What are the symptoms of P0715?
If your vehicle has triggered P0715, you may notice one or more of these symptoms:
- Check engine light and transmission warning light on
- Harsh or erratic gear shifts
- Transmission stuck in limp mode (usually 3rd gear)
- Speedometer malfunction or erratic readings
- Transmission slipping or refusing to shift
- Delayed engagement when shifting from Park to Drive
What causes P0715?
Here are the most common causes of P0715:
Faulty input/turbine speed sensor
: high
Damaged or corroded sensor wiring or connector
: medium
Contaminated transmission fluid affecting sensor readings
: medium
Faulty transmission control module (TCM)
: low
Damaged reluctor ring on the input shaft
: low
Is it safe to drive with P0715?
No - address this immediately. Without a reliable input speed signal, the transmission cannot calculate correct shift points. This can cause harsh shifting, gear slipping, or the vehicle entering limp mode. Drive only a short distance at low speed to a workshop and avoid motorways.
How do you diagnose P0715?
Follow these steps to pinpoint the root cause of P0715:
- Read freeze frame data and note vehicle speed, engine RPM, and transmission temperature when the code was set. This helps determine if the failure is intermittent or constant.
- Check the input speed sensor connector for corrosion, bent pins, or loose connections. The connector is typically on the side of the transmission housing.
- Measure the sensor resistance with a multimeter (typical range 200-1500 ohms depending on manufacturer). Compare to the service manual specification for your vehicle.
- Monitor the input speed signal while test driving. Transmission input speed is not standard OBD2 live data on most cars, so this needs manufacturer-level software. The signal should rise smoothly with vehicle speed and not drop out or show erratic readings.
- If the sensor and wiring test good, check the transmission fluid condition. Metal debris from internal wear can interfere with the magnetic sensor and cause false readings.
How much does P0715 cost to fix?
Repair costs for P0715 vary depending on the root cause and your vehicle. Here are typical estimates:
| Repair | Parts Cost | Labor Cost | Total Estimate | DIY Difficulty |
|---|---|---|---|---|
| Input speed sensor replacement | €30–€150 | €80–€250 | €110–€400 | Moderate |
| Sensor wiring harness repair | €20–€80 | €80–€200 | €100–€280 | Moderate |
| Transmission fluid and filter change | €50–€150 | €80–€200 | €130–€350 | Moderate |
| TCM replacement and programming | €300–€1000 | €150–€350 | €450–€1350 | Professional |
Prices estimated as of March 2026. Costs vary by region, vehicle, and shop.
P0715 on specific vehicles
P0715 behaves differently depending on your vehicle. Select your car below for model-specific causes and known issues:
Volkswagen
Volkswagen Golf
2003-2024
On Golf models with the DSG (DQ200/DQ250), the input speed sensors are integrated into the mechatronic unit, so P0715 on a DSG often indicates a mechatronic unit fault rather than a simple sensor failure.
Renault
Renault Megane
2006-2023
Megane models with the DP0/AL4 automatic transmission are well known for P0715. The input speed sensor on these transmissions can fail from heat when the transmission runs hot. Replacing the sensor along with fresh fluid usually resolves the issue.
P0715 on Audi
P0715 on Peugeot
Peugeot 308
Related diagnostic codes
These codes are often seen alongside P0715 or indicate related issues:
Common questions about P0715
- What does P0715 mean?
- P0715 means the transmission's input speed sensor is not sending a reliable signal to the control module. This sensor tells the transmission how fast the input shaft is spinning, which is critical for calculating when to change gears.
- Where is the input speed sensor located?
- The input speed sensor is typically mounted on the outside of the transmission housing, near the bell housing where the engine meets the transmission. On some vehicles, it is inside the transmission and requires pan removal to access.
- Can I drive with P0715?
- Driving is not advised. The transmission may stay in limp mode or shift unpredictably. Short-distance driving to a garage at low speed is generally acceptable, but avoid motorway driving.
- How much does an input speed sensor cost?
- The sensor itself costs 30-150 EUR depending on the vehicle. Labour adds 80-250 EUR. It is one of the cheaper transmission repairs, especially compared to internal transmission work.
- Can dirty transmission fluid cause P0715?
- Yes. Contaminated fluid with metal particles can interfere with the magnetic speed sensor. A transmission fluid change may resolve the issue if the sensor itself is not damaged.
Read our detailed guides
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- Bad Torque Converter Symptoms: Signs, Codes and Repair CostShudder at 30-50 mph, RPM flare without acceleration, and harsh Park-to-Drive shifts point to a failing torque converter. Here are the signs, codes and costs.
- Transmission Repair Cost: Repair, Rebuild or Walk Away?Transmission repair costs $150 for a fluid service, $2,000 to $4,000 for a rebuild, or $3,000 to $5,500 for a reman unit. And when the car is not worth it.
- Check Engine Light Flashing? Stop Driving and Read This FirstA flashing check engine light means the engine is misfiring right now. Pull over and read the code: the fix is usually $80 to $400, the delay costs $1,500 up.
- Car Dashboard Symbols and Meanings: Warning Lights ExplainedAn unfamiliar symbol just lit up and you need to know whether to stop. Read the colour first, then find your symbol in the table: every one carries its verdict.
Scan your car with Skanyx to diagnose P0715
Your car logged P0715. Skanyx reads it on a standard OBD2 adapter (Bluetooth LE on iPhone), tells you whether it is safe to keep driving, and shows the €100-€1350 repair range so you know the number before a shop quotes you. Free on iPhone and Android, and you do not need to be a mechanic to read it.
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