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2021 NISSAN FRONTIER

3.8L V64WDAUTOMATICgas
2 active safety recalls on this vehicle — view recalls
Repairs0Labor516Torque3956Fluid9DTC927Battery0Maintenance0Recalls2
P1701moderate severityPowertrain

Fuel Trim A/T Related

on 2021 Nissan Frontier 3.8L V6 · 4WD

What this code means

Fuel trim signal issue between engine and transmission control systems.

Symptoms

  • CEL
  • Poor shift quality
  • Engine flare during shifts
  • Rough transitions

Common causes

  • Communication fault
  • Fuel trim out of range
  • Faulty sensor data
  • Faulty ECM or TCM

Diagnostic steps

  1. Monitor fuel trims
  2. Test communication
  3. Check sensors
  4. Compare ECM/TCM data

Repair notes

Repair communication or sensor issue.

Other Powertrain codes on this vehicle

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