P1300 – Ignition Signal Fault (Nissan)

Description

The ECM detected an abnormal ignition signal.

Want to confirm the real cause of this fault code?

A high‑quality OBD2 scanner gives you live data, fuel trims, sensor readings and freeze‑frame information — exactly what you need to verify the root cause of this code with confidence.

View Recommended Scanners

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