P1334 – ECM Internal Ignition Control Fault (Nissan)

Description

The ECM detected an internal malfunction in the ignition control circuitry.

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Symptoms

  • Misfire
  • Hard start

Causes

  • ECM internal fault
  • Driver failure
  • Signal error

Diagnosis

  • Scan ignition data
  • Inspect wiring
  • Test ECM outputs

Repair

  • Repair wiring
  • Replace ECM