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Home >> Nissan-Datsun >> 2004 >> Maxima SL, RE4F04B >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTC >> DTC P0420, P0430: Three Way Catalyst Function >> Diagnostic Procedure >> 2. Check Exhaust Gas Leak

2. Check Exhaust Gas Leak

  1. Start engine and run it at idle.
  2. Listen for an exhaust gas leak before the three way catalyst (manifold).
Fig 1: Check Exhaust Gas Leak
G00874655Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

  1. OK: GO TO 3.
  2. NG: Repair or replace.
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