P0715 – Input/Turbine Speed Sensor Circuit

Description

The input/turbine speed sensor signal is missing or incorrect.

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Symptoms

Harsh shifting
Poor acceleration
Limp mode
No speed reading
Check engine light

Causes

Faulty turbine sensor
Damaged wiring
Loose connector
TCM issue
ECU issue

Diagnosis

Inspect wiring
Test turbine sensor
Check connectors
Scan live data
Inspect TCM

Repair

Replace turbine sensor
Repair wiring
Fix connectors
Replace TCM
Update ECU