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Home >> Nissan-Datsun >> 2003 >> Sentra SE-R, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics (Qr25DE) >> Diagnostic Tests >> DTC P0420: 3-Way Catalyst System Efficiency Below Threshold >> Overall Function Check
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Overall Function Check

CAUTION: Always drive vehicle at a safe speed.

Use this procedure to check the overall function of the 3-way catalyst (manifold). During this check, a DTC might not be confirmed. See Fig 1 .

Fig 1: DTC P0420 Overall Function Check
G00272228Courtesy of NISSAN MOTOR CO., U.S.A.