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P1278 Diagnostic Trouble Code Discussion for July 2012

Air Fuel Sensor (Bank 1 Sensor 1) Circuit Response Time

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Trouble Ticket Help Requests for DTC P1278
Help Request Posted
2004 Nissan Maxima SL 3.5L Excessive Emissions, Cuts out VIN: 1N4BA41E04
P1278: Air Fuel Sensor (Bank 1 Sensor 1) Circuit Response Time. ... loop 2 closed loop B1 P1031 A/F sensor heater control circuit P1278 A/F sensor B1 P1279 A/F sensor B1 slow response repaired exhaust leak at B1 sensor 1 with new cat & replaced A/F sensor, sensor connectors were melted f...
July 18, 2012