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Chevrolet Repair/Saturn L300 P0050

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Question
QUESTION: Hello!
There's no Saturn expert but I know chevy makes my 2003 Saturn L300 so why not!

My check engine light came on, read the code at a P0050. O2 sensor, bank 2 sensor 1.
I was wondering if this has to be taken in to a shop or am I able to fix this in my garage if I just go buy the part? How would I go about fixing this?

Thank you!

ANSWER: HI JESS. THIS CODE IS FOR A FAULTY HEATED OXYGEN SENSOR OR CK ALL OF YOUR FUSES BEFORE REPLACING THIS..THIS CODE IS FOR A OPEN CIRCUIT TO THE O2 SENSOR OR OPEN IN THE HEATED SIDE OF SENSOR. MOST OF THE TIME IT IS A FAULTY HEATED O2 SENSOR....THERE IS A LONG FLOW CHART FOR THIS..BUT IF YOU FEEL LUCKY CK ALL OF YOUR FUES AND IF OK REPLACE THE HEATED OXYGEN SENSOR..IF YOU DO NOT FEEL LUCKY TAKE THIS TO A SHOP THAT CAN RUN A DATA TEST WITH GM SOFTWARE.. YOUR PART STORE WILL KNOW WHICH SENSOR TO GIVE YOU BANK 2[ DOWN STREAM BANK 1 THAT IS CYLINDER # 1 SIDE] IF THIS IS WAHT YOU WANT TO DO....HOPE THIS HELPS YOU AND GOOD LUCK TO YOU,,TOM..

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bank 2 sensor 1
bank 2 sensor 1  
QUESTION: Where is this located? I've changed out things on my car myself. Hoping I can jilusy reach it and replace it myself.
Is there a diagram showing where this is located on my car? Or can you explain to me whete it is?
I was told its right in the front. But I would like to br sure.
I'm trying to attach a picture.

ANSWER: HI JESS, FIND YOUR # 1 CYLINDER  AND IT IS THE SECOND OXYGEN SENSOR ON THAT EXHAUST SIDE NOT THE FIRST ONE..YOU WILL HAVE 2 CYLINDER BANKS ON A V6. YOU WANT CYLINDER # 1 THAT IS BANK ONE AND THEN YOU WANT THE SECOND O2 SENSOR...GOOD LUCK,, TOM

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QUESTION: How would I go about changing this? I located it!

Answer
HI JESS,IN MY FIRST ANSWER TO YOU I WAS WRONG. PAY NO ATTENTION TO WHAT I SAID..BANK 2 SENSOR 1 IS AS FOLLOWS. FIND YOUR # 2 CYLINDER ON YOUR ENGINE AND REPLACE THE FIRST O2 SENSOR WHICH WILL BE IN THE EXHAUST MANIFOLD [BANK 2 SENSOR 1]IN FRONT ON TOP..  THE IMAGE THAT YOU SENT IS CORRECT.YOU GOT LUCKY ON THIS ONE [EASY TO GET AT]. I FEEL REAL BAD I GAVE YOU THE WRONG INFO. I READ YOUR QUESTION WRONG.. ALL YOU WILL NEED IS A 7/8" WRENCH OR YOU CAN RENT A OXYGEN SENSOR SOCKET FROM A PARTS STORE IF A WRENCH WILL NOT FIT...JUST UNSCREW IT LIKE YOU WOULD A SPARK PLUG AFTER REMOVING THE WIRING HARNESS TO IT. SOMETIMES THERE IS SOME LUBRICATION IN THE BOX WITH THE NEW O2 SENSOR,PUT THIS ON THE THREADS ONLY, NOT A LOT, JUST ENOUGH TO LUBE THE THREADS. HOPE THIS HELPS YOU AND GOOD LUCK,,TOM

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TOM SHEETS

Expertise

PLEASE READ ALL OF THIS BEFORE ASKING ANY QUESTIONS. IF THIS CHEVY SECTION IS MAXED OUT.YOU CAN REACH ME IN THE OLDS/BUICK SECTION. Will answer questions from 6:00am to 10:00pm all days [EST][[[ NO DIESEL OR PAINT QUESTIONS]]] will answer all 1965 to present QUESTIONS ON ALL GM'S on mechanics of these cars. Keep in mind i am not there in person i am going on what you are telling me !! PLEASE IF ASKING A QUESTION GIVE ME AS MUCH INFO AS POSSIBLE. THE MORE THE BETTER. SUCH AS YEAR,MAKE,MODEL,ENGINE SIZE. THIS WILL HELP ME HELP YOU. I will not be able to answer all questions because of some situations that i would really need to be there and see things for myself,such as electrical issues. In many cases i would need wiring diagrams. I can also give you an estimate on what the cost would be at our repair shop as an idea to help you. Keep in mind that my answer is ONLY MY ADVICE,ck with your mechanic as well.. >> THANK YOU, TOM..

Experience

I have been a ASE certified master mechanic for over 30 years and certified IN ALL 8 CATEGORIES,[engine repair,engine performance,auto trans,manual trans,clutches,steering and suspension,brakes,electrical systems,heating and air/cond. I am also a state CERTIFIED inspector for over 30 years. I do computer work [pcm]fault codes,pcm flashing,state inspection monitor readiness,repairs on exhaust,fuel service,[injection and carburetor,] charging system problems, running issues,alignments,frame problems,tire balance,struts and of course standard and anti-lock brakes.

Organizations
nys state auto repair industry and ase group.

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N/A

Education/Credentials
high school,4 years of tech school,and many many hours of auto training with many gm classes and aftermarket training classes..

Awards and Honors
ASE MASTER TECH CERTIFIED IN ALL 8 CATEGORIES.NYS INSP LICENSE AND A/C CERTIFIED

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MANY CUSTOMERS IN OUR BUSY SHOP.

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