I have code u1001 in 2003 nissan sentra how can i fix this problem

Question edited for clarity, year make model FIRST.
Question moved to model category.

Hi Joe
If you clear codes, sometimes that will come straight back, sometimes a couple of drives later, sometimes they don't come back. All the codes are fuel related, fuel/air ratio, catalytic converter and MAF. Run a bottle of extreme fuel system cleaner through your system. This is good stuff, I have used it a few times.

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Here are all the codes

MAF or Crack in Intake Hose
https://www.google.com/search?q=2011+Nissan+Sentra.+Why+the+error+code%2C+P0101

CAT not acting as it should
https://www.google.com/search?q=2011+Nissan+Sentra.+Why+the+error+code+P0420

Fuel/Air o2 sensor
https://www.google.com/search?q=2011+Nissan+Sentra.+Why+the+error+code+P0131

..

code 134 is o2 sensor bank one no activity sensor one. code 403 is egr circuit malfunction. 1126 is throttle control motor relay inop.

yes should work fine

Po 136 ---is an oxygen sensor code for a sensor
on Bank #1 Sensor #2

Nothing to do with MAF

Also education & solutions can be for using Google

Put in------ OBD2 Codes PO138 nissan sentra

I suggest you take it to a dealer , a qualified tech should resolve this problem, DO NOT attempt to fix, if air bag is sending a code it could deploy and seriously injure you or your passenger. hopefully its an easy fix, but right now it could be dangerous !!!!!!

replace all 4 for your o2 sensors sorry i see that all the time

check engine light on means some fault codes stored in your engine control module.
use this tool clear the fault code p1320.

Have a mechanic check it for vacuum leaks!

Good luck and be careful!

What exactly did they do to make the repair?I can not find that code at all in my code list.

I have the same car...04 nissan sentra....with the exact same problem....left side speakers just quit working. I still do not know what caused the problem, or how to fix it. I know it not the wiring, it is a defect within the stereo.