you will need a sensor socket for the sensors. unplug wiring to sensor, run car for a few minutes, find sensor and turn it out with socket wrench, be carefull exhaust will be warm. they will come out eaiser if the exhaust is warm.
snac ecm for codes then using code data you can determine which sensor kbutlrtech@yahoo.com
it has 2 sensors, 1 before converter another after converter in exhaust pipe.
timing is preset at factory,no adjustments, the sensors send info to pcm to control timing and fuel.
the upstream o2 sensor is mounted in the exhaust before the catalytic converter and the downstream sensor is after the cat. conver.
check fuse or relay in underhood fuse box,
on 3.1--14.3 gallons--2000 Malibu
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yea
p0412 on a 2000 Malibu is secondary air injection system valve A malfunction-
The 2000 Nissan Xterra V6 is equipped with two knock sensors. They are located on the engine block, and both sensors work together to detect engine knock and optimize performance. If you're replacing them, it's advisable to replace both at the same time to ensure proper function.