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Home >> Lexus >> 2010 >> GS 350 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 168 (Engine Control System (DTCS P0420 - U0101 & Circuit Tests)) >> SFI System >> MIL Circuit >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2009 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.

HINT: 

Troubleshoot each problem symptom in accordance with the chart below.

MIL remains illuminated Start inspection from step 1
MIL not illuminated Start inspection from step 4