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DTC P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATER EC-745 < SERVICE INFORMATION > [VK45DE] C D E F G H I J K L M A EC N P O Check resistance between terminals 3 and 4. Check continuity between terminals 3 and 1, 2, 5, 6, terminals 4 and If NG, replace the A/F sensor 1. CAUTION: • Discard any A/F sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such • Before installing new A/F sensor, clean exhaust system threads using Heated Oxygen Sensor Thread Cleaner tool J- Removal and Installation INFOID:0000000001326569 AIR FUEL RATIO (A/F) SENSOR 1 . Resistance: 2.3 - 4.3 Ω [at 25 ° C (77 ° F)] Continuity should not exist. PBIB1684E |