Question about 2002 Ford F150 Regular Cab

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02 sensors are the o2 sensors hard to replace on 2002 ford f150 4.2 engine? thats what auto zones printout said o2 sensor is keeping engine light on im going to try and replace sensors myself any help would be appreciated someone said that i could try adding' seafoam addative to gas to clean sensors. thanks again.

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The printout from Auto zone tells you that there is a probelm with fuel mixture control, this doesn't always mean the O2 sensors are defective, intake leaks and iother factors can give O2 codes, give me the code you have and i will let you know the most likely problem.

Posted on Jul 02, 2009

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What is p2197


This code means that the O2 sensor is bad. This is the first 02 sensor on bank 2, of the engine. It is stuck on a lean setting, and needs replaced. Bank 1 refers to the side of the engine that has the #1 cylinder. Bank 2 is the opposite side of the engine. Good-Day! If you have any questions on this, Im sure any auto parts store will help you out Auto-zone Etc, They will even scan a problem code for free, as long as the check engine light is on.

Aug 03, 2014 | 2003 Ford Explorer

1 Answer

I already replaced front 02 sensor and still have 02 sensor codes


I'm pretty sure there are FOUR O2 sensors on my 2002 Escape. Two on the drivers side and two on the passenger side. At least that is what Auto Zone told me. Take the vehicle there and have them run a diagnostic. My #2 sensor on the passenger side was bad. You might also try disconnecting the negative battery cable and see if the check engine light goes out. That should also reset the computer and you may no longer get the code.. Then again, I could all wet.

Apr 11, 2013 | 2002 Ford Escape

2 Answers

96 Ford Taurus (150K miles) with engine code P0141 heated O2 sensor bank 1 sensor 2. This happened after having the transmission replaced. The engine runs rough or stalls during an idle. The transmission...


the transmission replcement mechanic may have missed plugging the 02 sensor back up,or layed the 02 sensor wires across the exhaust system,which burnt the 02 sensor wires.they also may have missed plugging sensors back up. suggest you go back to replacement mechanic and have them explain to you why it does'nt run the same. but do not be fooled,somethings not plugged back correctly.i know budget living. is check engine light on? if so, auto zone and advance auto parts can diagnose with printout for free. no charge! hope this helps and thank you for choosing fixya.com us marine retired

Dec 28, 2010 | 2003 Ford Taurus

1 Answer

I have a 2002 hyundai accent in which the check engine light keeps coming on. I replaced the o2 sensor twice because I was told it was a bad o2 sensor and now the light is on again. any ideas---my...


Thats why you dont take advice from ottozone. First you may really have had an oxygen sensor problem, then you bought one from ottozone, ( who brag about how cheap their parts are) then you put in another cheap sensor. Have your car looked at by well equipped repair shop thats not trying to sell you car parts.

Dec 16, 2010 | 2002 Hyundai Accent

1 Answer

I have a 2003 GMC Envoy and the check engine light comes on peridically. Auto Zone checked it and Code 0128 was the alleged issue. However, where is the sensor? No one seems to know the location of the...


This code relates to low coolant temperature not the 02 sensors. You should change your thermostat, it's stuck open and is not allowing the engine to properly heat up.

By the way, there are 2 92 sensors on Envoys and Trailblazers. One of them upstream is in the engine compartment right off the exhaust manifold, easy to replace. The other one downstream is next to the transmission drain plug in the exhaust pipe.

Oct 26, 2010 | 2002 GMC Envoy XL

3 Answers

CHECK ENGINE LIGHT STAYS ON. WAS TOLD IT WAS THE 02 SENSOR/VALVE. WHERE DO I FIND THIS? GMC SIERRA 1500


You should have 5, O2 sensors on your Sirera. What are the DTC codes, each codes will indicate which O2 sensor needs to be addressed, or is this an answer with someone guess what the check engine light is saying.
Thye check engine light could be from a bad O2 sensor to just a bad or loose gas cap to a transmission issues.
Thank you for using fixya and note that Auto Zone and most larger auto parts store will scan DTC codes free of charge.

Jun 07, 2010 | 2006 GMC Sierra 1500 2WD

1 Answer

2002 ford expedition "service engine soon" light keeps coming on. I've had the O2 sensor replaced three times in the past month, now the next day or two after the sensor replacement the light comes back...


get a new mechanic, need to check for vac. leaks, poss needs tune up. alot O2 codes i have gotten have been created by vacuum leak or warn out plugs, rarely have i had to replace a O2 sensor.

Oct 14, 2009 | 2002 Ford Expedition

1 Answer

My 2003 ford 150 is stalling and my friend had a reader and the o2 sensor came up bank 1 not sure which one that is and how to properly change it


The O2 sensor bank 1 is on the passenger side along the exhaust down pipe before the Catalytic Converter. Note and bad or faulty O2 sensor will not cause the engine to stall. Good luck and keep me posted, be glad to answer any questions you may have. oh and to replace the O2 sensor is as simple as replacing a spark plug. Auto Zone has O2 sensor and they can give you the step by step instructions to replacing the O2 sensor with common tools and if you need a O2 socket, they can give you one as a loner. 

Jul 28, 2009 | 2003 Ford F150 Regular Cab

1 Answer

Service engine light


More than likely the O2 sensor on the passenger front.What was fords bad design when it rains water runs off from the windshield an down on the sensor causing early failure..Its not that major but that annoying light will be on..If theres is an auto zone near by I'd suggest to take it there and they will scan it for free and then you will get your answer on why it is on..But I'm sure thats what the problem is...

Mar 29, 2009 | 2002 Ford Expedition

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