P0715 on Mazda: How to Diagnose & Fix
Input/Turbine Speed Sensor Circuit Malfunction
1 Mazda model · 1 documented issue · 1 critical · $1,500-$3,500 repair
P0715 on Mazda by model: symptoms, diagnosis and fix
Same CD4E automatic transmission as the Ford Escape, prone to premature failure. Internal clutch and servo bore wear. V6 models with CD4E are most affected.
Common Symptoms
- Harsh 1-2 shift
- Slipping in 3rd and 4th gear
- Shudder on acceleration
- Delayed engagement
- Burning trans fluid smell
How to Fix
Rebuild or replace transmission with remanufactured unit. Use updated servo bore kit during rebuild. Fluid changes every 30k miles help but do not prevent failure.
Owner tips & cautions
- TipThe 4-cylinder model uses a different (more reliable) transmission — CD4E problems are V6 specific
Sources for this issue (2)
P0715 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0715 mean on a Mazda?
P0715 stands for "Input/Turbine Speed Sensor Circuit Malfunction." P0715 indicates a malfunction in the input/turbine speed sensor circuit of an automatic transmission. This sensor measures how fast the transmission's input (turbine) shaft is rotating, which the transmission control module uses—alongside output speed—to calculate gear ratios and command smooth, properly timed shifts. When the signal is missing, erratic, or out of range, this code sets. Symptoms often include harsh or erratic shifting, incorrect shift points, no speedometer-related transmission data, or the transmission dropping into a limp/fail-safe mode. On Mazda it is documented across 1 model: Tribute.
What are the most common causes of P0715?
The most common causes of P0715 are: Faulty input/turbine speed sensor, Damaged wiring or connector at the sensor, Low or contaminated transmission fluid, Corroded or loose connector terminals, Open or short in the sensor circuit, Internal transmission wear or debris affecting the sensor, Faulty transmission control module (less common). The specific cause varies by vehicle.
How much does it cost to fix P0715 on a Mazda?
Published repair estimates on Mazda range from $1,500 to $3,500 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for P0715 on a different make?
View P0715 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.