P1801 – IMRC Circuit (Nissan)

Description

The ECM detected an electrical malfunction in the IMRC circuit.

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Symptoms

  • Poor acceleration
  • Warning light

Causes

  • Open circuit
  • Short to ground
  • Actuator failure

Diagnosis

  • Check wiring
  • Inspect connectors
  • Scan ECM data

Repair

  • Repair wiring
  • Replace actuator