P1715 — Input/Turbine Speed Sensor (Transmission) Circuit Malfunction

CAUTIONIs it safe to drive? Drive gently and get it looked at soon — it can worsen or fail inspection.

What P1715 means

This is a manufacturer-specific code — its meaning depends on the vehicle’s make (see below).

What P1715 means on specific makes

Heads up: P1715 is a manufacturer-specific code, so the same number means different things by make.

Nissan / Infiniti CAUTION

The transmission input shaft (turbine) speed sensor signal is faulty, so the TCM can't compare input vs output speed. On Nissan CVTs this is a common cause of harsh/erratic shifting or limp mode.

  1. Failed input/turbine speed sensor ($80-200)
  2. Connector/wiring fault
  3. CVT internal/valve body issue (if sensor is fine)

Check first: Check the speed sensor signal and harness; on CVTs verify fluid condition too. Treat shudder/limp as a sign not to flog the CVT.

Source: troublecodes.net/nissancodes

Mitsubishi CAUTION

Fault in the automatic transmission pulse generator assembly (input/turbine speed sensors). The TCM loses input-speed data, causing harsh or erratic shifts on Mitsubishi automatics.

  1. Failed pulse generator assembly ($100-300)
  2. Connector/wiring fault
  3. Internal trans issue (if sensor is good)

Check first: Check the pulse generator signals and harness; verify ATF condition. Erratic shifting + this code points to the sensor assembly.

Source: troublecodes.net/mitsu, ricksfreeautorepairadvice.com/mitsubishi-obd2-codes

Related codes

P1716P0717
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