P0715 on Hyundai: How to Diagnose & Fix
Input/Turbine Speed Sensor Circuit Malfunction
1 Hyundai model · 1 documented issue · $150-$450 repair
P0715 on Hyundai by model: symptoms, diagnosis and fix
Owners of automatic-transmission Elantras from this generation frequently report sudden harsh shifts, incorrect gear selection, limp mode, or a stuck speedometer caused by failing transmission speed sensors. Hyundai service literature and repair databases commonly reference input and output speed sensor faults on these vehicles. The problem often appears intermittently at first, then becomes more consistent as the sensor signal drops out.
Common Symptoms
- harsh upshifts
- transmission stuck in one gear
- check engine light
- erratic or inoperative speedometer
- delayed shifting
How to Fix
Scan the transmission control system for speed-sensor-related codes and compare live data from the input and output sensors during a road test. Replace the failed sensor(s), inspect the wiring and connector pins for fluid intrusion or corrosion, and verify fluid condition. Clearing codes and performing a drive cycle usually confirms the repair.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Genuine Hyundai 42620-39051 automatic-transmission input speed sensorOEMHyundai 42620-39051
Confirm VIN and installed connector bef
- Genuine Hyundai/Kia 42621-39052 automatic-transmission output speed sensorOEMHyundai/Kia 42621-39052
Confirm VIN, transmission and the 42621-39052 number because the part also serves o
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Owner tips & cautions
- TipBefore condemning the transmission, check for speed sensor codes and verify sensor data because many harsh-shift complaints are electrical rather than internal gearbox failure.
- TipIf the transmission fluid is dark or burnt, service it after sensor replacement to improve shift quality and long-term reliability.
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 Hyundai?
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 Hyundai it is documented across 1 model: Elantra.
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 Hyundai?
Published repair estimates on Hyundai range from $150 to $450 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.