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Home >> Nissan-Datsun >> 2004 >> Maxima SL, RE4F04B >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System - DTC >> DTC P0420, P0430: Three Way Catalyst Function >> Diagnostic Procedure >> 1. Check Exhaust System
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1. Check Exhaust System

Visually check exhaust tubes and muffler for dent.

OK or NG 

  1. OK: GO TO 2.
  2. NG: Repair or replace.
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