Question about 2004 Nissan Altima
The light service engine soon came 2 days ago. I took it to auto zone and the get this code: P1273, air fuel sensor and heater bank 1, what does mean and that is costly?
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Posted on Jan 02, 2017
SOURCE: 2004 nissan sentra problem
the (P1273) refer to A\F SENSOR
that locate in the exhaust pipe
it was a sensor calculate the air to fuel ratio in the exhaust pipe and send that as electrical signal to the (ECU) that use it to correct the fuel injection timing in result to have economy of fuel and low bad gases in exhaust
the cause of this fault is :-
air fuel ratio sensor 1
air fuel ratio sensor 1 heater
intake air leaks
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Posted on Jul 14, 2008
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Air Fuel Sensor (Bank 1 Sensor 1) Circuit Lean Shift
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