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P0131 A/F SENSOR 1 EC-269 < DTC/CIRCUIT DIAGNOSIS > [MR FOR NISMO RS MODELS] C D E F G H I J K L M A EC N P O 5. Also check harness for short to power. YES >> GO TO 4. NO >> Repair or replace error-detected parts. 4. CHECK INTERMITTENT INCIDENT Perform GI-45, "Intermittent Incident" . Is the inspection result normal? YES >> GO TO 5. NO >> Repair or replace error-detected parts. 5. REPLACE AIR FUEL RATIO (A/F) SENSOR 1 Replace air fuel ratio (A/F) sensor 1. Refer to CAUTION: • Discard any sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a concrete floor; use a new one. • Before installing new sensor, clean exhaust system threads using Oxygen Sensor Thread Cleaner [commercial service tool (J-43897-18 or J43897-12)] and approved Anti-seize Lubricant (commercial service tool). >> INSPECTION END + − Continuity A/F sensor 1 Connector Terminal F70 1 Ground Not existed 2 + − Continuity ECM Connector Terminal F25 21 Ground Not existed 25 |