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EC-306 [QG (WITH EURO-OBD)] DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION (A/T MODELS) Diagnostic Procedure EBS00QM2 1. CHECK EXHAUST GAS LEAK 1. Start engine and run it at idle. 2. Listen for an exhaust gas leak before three way catalyst (Manifold). OK or NG OK >> GO TO 2. NG >> Repair or replace. 2. CHECK FOR INTAKE AIR LEAK Listen for an intake air leak after the mass air flow sensor. OK or NG OK >> GO TO 3. NG >> Repair or replace. SEC502D |