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Diagnostic Procedure NHEC0115 1 RETIGHTEN GROUND SCREWS 1. Turn ignition switch “OFF”. SEF255X © GO TO 2. 2 RETIGHTEN HEATED OXYGEN SENSOR 1 (FRONT) Loosen and retighten corresponding heated oxygen sensor 1 (front). Tightening torque: 40 - 60 N·m (4.1 - 6.2 kg-m, 30 - 44 ft-lb) © GO TO 3. 3 CHECK FOR EXHAUST AIR LEAK 1. Start engine and run it at idle. SEF099P 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 or NG OK © GO TO 5. NG © Repair or replace. GI MA EM LC FE AT AX SU BR ST RS BT HA SC EL IDX DTC P0133 (BANK 1), P0153 (BANK 2) HO2S1 (FRONT) (RESPONSE MONITORING) Diagnostic Procedure EC-223 |