P0715: Input/Turbine Speed Sensor Circuit Malfunction
Can you still drive? Not recommended for extended driving. The transmission may shift harshly or get stuck in limp mode. Have it diagnosed promptly to avoid transmission damage.
What Does P0715 Mean?
Code P0715 means the PCM/TCM is not receiving a valid signal from the input speed sensor (also called the turbine speed sensor). This sensor measures the rotational speed of the transmission input shaft, which the computer uses to calculate shift points, torque converter slip, and gear ratios. Without this signal, the transmission cannot shift properly.
Need to read your codes?
An OBD-II scanner lets you read and clear diagnostic trouble codes from your vehicle's computer. Most scanners work with any car made after 1996.
Browse OBD-II Scanners on AmazonCommon Causes
- Failed input speed sensor
- Damaged wiring or connector to sensor
- Contaminated transmission fluid causing sensor buildup
- Faulty PCM/TCM
- Damaged reluctor ring inside transmission
Symptoms
- Check engine light on
- Harsh or erratic shifting
- Transmission slipping
- Speedometer malfunction
- Transmission stuck in one gear or limp mode
Diagnostic Steps
- 1Read freeze frame data and note vehicle speed and RPM at time of fault
- 2Check transmission fluid condition for debris or burnt smell
- 3Inspect input speed sensor wiring and connector
- 4Test input speed sensor resistance with multimeter
- 5Monitor sensor signal with scan tool during test drive
- 6Compare input and output speed sensor readings for consistency
Recommended Parts & Tools
input speed sensor
transmission fluid
transmission filter kit
OBD-II scan tool
Estimated Repair Cost
| Type | Estimated Cost |
|---|---|
| Total Repair Cost Range | $100 - $500 |
Get a Personalized AI Diagnostic Report
Get a detailed AI diagnosis for code P0715 specific to your vehicle. Includes step-by-step repair instructions, exact parts needed, and a cost breakdown tailored to your make and model.
Chat with AI About P0715Commonly Affected Vehicles
Related Recalls
Frequently Asked Questions
Where is the input speed sensor located?
The input speed sensor is typically mounted on the outside of the transmission case, near the front or side. It reads the speed of the input shaft or turbine inside the transmission.
Can dirty transmission fluid cause P0715?
Yes, contaminated or debris-laden transmission fluid can coat the sensor or damage the reluctor ring it reads, causing an unreliable signal. A fluid and filter change may help.
Community Fix Reports
Community reports are user-submitted and not verified by Auto AI Buddy. Results may vary.
Related Codes
Affiliate Disclosure: This page contains affiliate links. If you purchase products through these links, we may earn a small commission at no additional cost to you. This helps us maintain this free resource. We only recommend products we believe will help you diagnose and repair your vehicle. Prices shown are estimates and may vary.