P1351 – Ignition Coil Secondary Circuit Fault (Nissan)

Description

The ECM detected a secondary circuit malfunction in the ignition system.

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Symptoms

  • Misfire
  • Rough idle

Causes

  • Coil breakdown
  • High resistance
  • Wiring issue

Diagnosis

  • Check coil output
  • Inspect wiring
  • Scan misfire data

Repair

  • Replace coil
  • Repair wiring

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