P1628 – Sensor Power Supply Fault (Nissan)

Description

The ECM detected a malfunction in the shared sensor power supply circuit.

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Symptoms

  • Multiple sensor codes
  • Warning light

Causes

  • Short to ground
  • Open circuit
  • ECM driver fault

Diagnosis

  • Check 5V reference
  • Inspect wiring
  • Scan sensor data

Repair

  • Repair wiring
  • Replace ECM