P1715 on Infiniti

Input (primary) speed sensor signal fault in a Nissan or Infiniti automatic or CVT

Severity: Severity not verified — if the car runs badly, have it inspected

Owners report lost power, hesitation and limp mode with this code, but we found no source that says how far the vehicle can safely be driven.

It gets more serious if:

Inspect soon: The vehicle hesitates, loses power, revs without speeding up or goes into limp mode.

Source: how we rate severity

This page covers only what differs on Infiniti. For what P1715 means, the ranked causes and the test order, see the P1715 guide.

What's different on Infiniti

Infiniti

2014 · QX60
Possible — needs testing
A QX60 owner read P1715 as input pulley speed signal with P0776 and surging revs.

Sources and review

NHTSA complaint 1769360: 2014 Infiniti QX60, P1715 — NHTSA (owner complaint)
NHTSA complaint 1034643: 2014 Nissan Versa Note, P0500, P1574, P1715, P1720, P0720 — NHTSA (owner complaint)
Nissan bulletin NTB18-077b: MIL on with P0776 and P1715, hesitation or lack of power — Nissan North America (via NHTSA flat-file summary)

Last reviewed: October 16, 2026
Written by: Saurabh K.
Editorial review: Pending
Technician review: Technician review pending

This page explains what a code usually means; it is not a substitute for a professional inspection. How we source and review · Report an error