P0715 on Kia
Input/Turbine Speed Sensor Circuit Malfunction
P0715 on Kia vehicles indicates input/turbine speed sensor circuit malfunction. Au7o has documented this code across 1 Kia model — most commonly on Optima. 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. Typical repair costs on Kia range from $250 to $2,800, depending on the specific model and root cause.
Common Causes of P0715
- •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)
P0715 on Kia by Model
Kia Optima(1 issue)
- Automatic Transmission Speed Sensor and Shift Failure2001-2002
Complaints show a recurring pattern of automatic transmission malfunction on early Optimas, including hesitation, refusal to go into gear, harsh downshifts, and limp-home operation. Several reports specifically mention input and output speed sensor failure causing the transmission to drop from 4th gear and shift only between lower gears.
Looking for P0715 on a different make?
View P0715 across all makes →Frequently Asked Questions
What does P0715 mean on Kia?▼
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 Kia specifically, this code is documented across 1 model.
What causes P0715 on Kia vehicles?▼
Common causes on Kia: 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. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0715 on a Kia?▼
Repair costs on Kia range from $250 to $2,800, depending on the specific model and root cause.
Which Kia models have P0715 documented?▼
Au7o has documented P0715 on 1 Kia model: Optima.