Took my car to the dealer for the CEL coming on. They are telling me the O2 sensor is bad and needs replacing for $300. Is this something that would be easy to fix? Any tips would be appreciated. P0158 is the code. I have 54K on my 01 SE. Thanks...

 

Find out what the code is from the CEL. Take that code, and do some research on the org first. After that, if it is the 02 sensor that you need. Call up people on oxygensensors.com and tell them the code, they'll tell you which 02 sensor you need. It's about 99 bux there or less depending on which 02 sensor you need. They'll also give you a diagram of where the 02 sensor belongs. Or you can check nycmaximas.org in 5th gen area for a sticky of the diagram of all the sensors. Take it to the local shop, have them replace it for $40, and finito. Goodluck.

 

P0132 - Heated Oxygen Sensor 1 Circuit High Voltage (Bank 1)
P0133 - Heated Oxygen Sensor 1 Circuit Slow Response (Bank 1)
P0134 - Heated Oxygen Sensor 1 Circuit No Activity Detected (Bank 1)
P0138 - Heated Oxygen Sensor 2 Circuit High Voltage (Bank 1)
P0139 - Heated Oxygen Sensor 2 Circuit Slow Response (Bank 1)
P0152 - Heated Oxygen Sensor 1 Circuit High Voltage (Bank 2)
P0153 - Heated Oxygen Sensor 1 Circuit Slow Response (Bank 2)
P0154 - Heated Oxygen Sensor 1 Circuit No Activity Detected (Bank 2)
P0158 - Heated Oxygen Sensor 2 Circuit High Voltage (Bank 2)
P0159 - Heated Oxygen Sensor 2 Circuit Slow Response (Bank 2)

 

Is this covered past the 36K mile warranty?

 

Follow this and you will find your answer:
http://forums.maxima.org/showthread.php?t=374481