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DTC P0133, P0153 A/F SENSOR 1 EC-241 < SERVICE INFORMATION > [VQ35DE] C D E F G H I J K L M A EC N P O : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) Diagnosis Procedure INFOID:0000000001326072 1. CHECK GROUND CONNECTIONS 1. Turn ignition switch OFF. 2. Loosen and retighten ground screw on the body. Refer to OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. 2. RETIGHTEN AIR FUEL RATIO (A/F) SENSOR 1 Loosen and retighten the air fuel ratio (A/F) sensor 1. >> GO TO 3. 3. CHECK EXHAUST GAS LEAK 1. Start engine and run it at idle. TER- MI- NAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) 24 L A/F sensor 1 heater [Engine is running] Approximately 5V 57 G A/F sensor 1 (bank 2) [Engine is running] Approximately 2.6V 58 Y Approximately 2.3V 76 P Approximately 3.1V 77 BR Approximately 2.3V PBIB1584E PBIB2625E Tightening torque: 40 - 60 N-m (4.1 - 6.1 kg-m, 30 - 44 ft-lb) PBIB2200E |