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2021 NISSAN LEAF

Electric 40kWhFWDAUTOMATICev
4 active safety recalls on this vehicle — view recalls
Repairs0Labor598Torque271Fluid5DTC569Battery0Maintenance0Recalls4
P1605high severityPowertrain

A/T Diagnostic Communication Line

on 2021 Nissan Leaf Electric 40kWh · FWD

What this code means

Failure in communication between ECM and TCM.

Symptoms

  • CEL
  • Trans stuck in failsafe
  • No shifting past 2nd/3rd
  • Overdrive light off

Common causes

  • Blown A/T fuse
  • Faulty TCM
  • Damaged communication wiring
  • Corroded connectors

Diagnostic steps

  1. Check A/T fuse
  2. Test communication line
  3. Inspect connectors
  4. Test TCM

Repair notes

Repair communication line or replace fuse.

Other Powertrain codes on this vehicle

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