P1316 – Ignition Signal Circuit Fault (Nissan)

Description

The ECM detected an ignition signal circuit malfunction.

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Symptoms

  • Misfire
  • Hard start

Causes

  • ECM driver fault
  • Wiring issue
  • Coil failure

Diagnosis

  • Check ignition signal
  • Inspect wiring
  • Scan misfire data

Repair

  • Repair wiring
  • Replace coil
  • Repair ECM