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P0133, P0153 A/F SENSOR 1 EC-217 < DTC/CIRCUIT DIAGNOSIS > [VK56DE] C D E F G H I J K L M A EC N P O OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. 2. RETIGHTEN A/F SENSOR 1 Loosen and retighten the A/F sensor 1. >> GO TO 3. 3. 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 4. NG >> Repair or replace. 4. CHECK FOR INTAKE AIR LEAK Listen for an intake air leak after the mass air flow sensor. OK >> GO TO 5. NG >> Repair or replace. 5. CLEAR THE SELF-LEARNING DATA With CONSULT 1. Start engine and warm it up to normal operating temperature. BBIA0354E Tightening torque: 50 N-m (5.1 kg-m, 37 ft-lb) BBIA0375E PBIB1216E |