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Q:

02 sensor on 2006 Nissan Altima

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
The code that comes up is P0037 heater circuit low Bank 1 Sensor 2
(2) Answers
IF DIAGNOSIS was paid for , ask your mechanic if he can guarantee that it's correct. What was TESTED as pushrod already asked?
I see someone has already thrown an 02 sensor on it, like everybody does, without testing the circuits going to the sensor!! Find your answer in that statment....