P1313 – Knock Sensor 2 Circuit Fault (Nissan)

Description

The ECM detected a circuit malfunction in knock sensor 2.

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Symptoms

  • Poor acceleration
  • Engine noise

Causes

  • Open circuit
  • Sensor failure
  • Wiring issue

Diagnosis

  • Check sensor resistance
  • Inspect wiring
  • Scan knock data

Repair

  • Replace sensor
  • Repair wiring