P1821 – CVT Step Motor (Nissan)

Description

The ECM detected abnormal CVT step motor operation.

Want to confirm the real cause of this fault code?

A high-quality OBD2 scanner gives you live data, fuel trims, sensor readings and freeze-frame information — exactly what you need to verify the root cause of this code with confidence.

View Recommended Scanners

Symptoms

  • Limp mode
  • Harsh shifting

Causes

  • Motor failure
  • Hydraulic issue
  • Wiring fault

Diagnosis

  • Check step motor
  • Inspect wiring
  • Scan CVT data

Repair

  • Replace motor
  • Repair wiring