P1514 – Throttle Position Sensor Correlation Fault (Nissan)

Description

The ECM detected a mismatch between throttle position sensors.

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Symptoms

  • Poor acceleration
  • Limp mode

Causes

  • Sensor failure
  • Wiring issue
  • ECM logic fault

Diagnosis

  • Check TPS signals
  • Inspect wiring
  • Scan throttle data

Repair

  • Replace sensor
  • Repair wiring