The Quick Answer above is the generic definition. What follows is what is documented for the Audi models that log P0715, checked against manufacturer data and owner reports.
DTC/P0715·Audi
P0715 on Audi: Causes, Symptoms and Fix Cost
Quick Answer
High SeverityNot safe to driveAudi
P0715 on a Audi 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.
Repair cost on Audi€100 - €1350
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Audi A4
2005-2024The A4 with Multitronic CVT (B7/B8) and S-Tronic DSG uses speed sensors that can fail due to metallic debris in the transmission fluid. The Multitronic CVT is particularly sensitive and requires strict adherence to fluid change intervals (every 60,000 km). On S-Tronic models, the sensor is part of the mechatronic unit.
What causes P0715 on a Audi?
Beyond the generic causes listed on the main P0715 page, these are the documented Audi-specific patterns:
Audi A4Multitronic CVT fluid contamination affecting sensors
Audi A4S-Tronic mechatronic speed sensor failure
How to diagnose P0715 on a Audi with OBD2
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 sensor signal with a scanner in live data mode while test driving. 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 on a Audi? (EUR)
Estimated repair costs for P0715 in EUR, compiled across makes. Expect Audi parts and labour towards the upper end of each range.
Prices estimated as of March 2026. Costs vary by region, vehicle, and shop.
Related codes that often appear with P0715 on Audi
These codes commonly cluster with P0715 on Audi vehicles:
Looking for the full P0715 reference (all makes, full diagnosis flow, complete repair cost matrix)?
See the main P0715 guideSkanyx · Audi
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