OBD OBD Code Guide

2013-2018 Nissan Altima 2.5L: OBD Codes and What to Check First

CVT-related complaints are the single largest cluster on this generation.

Years
2013-2018
Engine
2.5L (QR25DE)

Codes recorded for this model

What to check first on this engine

These come from how this specific engine fails, not from a generic code list.

  1. 1

    Read the transmission module, not the engine module

    P0700 is only a request from the transmission controller. The real code lives in the TCM and needs a scanner that reaches it.

  2. 2

    Check CVT fluid level and color first

    This generation carries the largest share of CVT complaints. Dark or burnt fluid means the unit has been running hot, which changes the whole repair.

  3. 3

    Note exactly when the shift feels wrong

    A flare on the first shift out of park points somewhere different from a harsh upshift under load. Write down what you felt before the shop writes an estimate.

What this page does not have yet

Vehicle-specific NHTSA complaint counts, model-specific labor times, and OEM part numbers are not on this page. Those numbers need a source we can cite, and the ODI complaint data has not been ingested for this build. We left the fields out rather than print a figure we cannot back up.