Got the part ordered. Will update when I get it installed

 

Nice, hopefully no more codes. Ever.

 

Shzt Happens....all that matters is that it is fixed....hopefully....good work....at least a dealer didn't do it

 

Ok gents, I'm gonna have to eat some here, Red and Gremlin, I used the old from the drivers side and installed on the passenger and so far has been free of codes for the last several days. Thanks very much for the help.

 

Thanks guys, Noodles - I was thinking about that was thinking about doing that last night. Gonna have to wait until this weekend though. I will post the findings when I get them.

 

Bank 1 is the passenger side of the engine. Cylinder 1 is the first one on that side closest to the front. Bank 2 is driver side.

 

Ok...what else do ya need???? There are shzt loads of sites saying the same thing.

Oxygen Sensor Locations

 

Well, that's not my understanding, bank 1 is cylinder 1, doesn't matter what part...could be wrong???? That's how I always ID it

 

ok, but O2 sensors are bank 1 left side (drivers) and bank 2 right (pass). this is not a misfire issue though

 

Thought there was something here from before.....check it out.

http://www.f150ecoboost.net/forum/14-f150-ecoboost-maintenance/8310-cylinder-order.html

**** happens

 

Red, everything I have read about this said O2 sensor 1 bank 1 is driver side before cat, 1 bank 2 would pass side or p0151? Did I just change the wrong damn sensor?

 

It's very simple to figure out. Unplug one of the sensors and see what code comes up. That'll give 100% confidence on which bank is which.

 

No...Bank 1 is Cylinder 1.... our trucks cylinders 1, 2, 3, on passenger side front to back......driver's side 4, 5, 6, front to back...cylinder 6 left/drivers side closet to firewall.

 

Ok, an update on my issues...replaced driver side upper O2 sensor and did not help still pops, going to do a hard reset on the ECM tonight and see what happens. Gremlin, if Daugherty had the passenger side bolt broke wouldn't that be bank 2 sensor 1 for the pass side upper? Also mine only seems to do it after it has sat for several hours and the truck runs smooth even with the light on, I may be going to the dealer.

 

<—123
<—456
Firing order 142536

 

Hey there guys, very good read on this thread. My 2013 (108k miles) started throwing this code a while back and I replaced the bank 1 sensor 1 O2 sensor and it wasn't which a big deal. I used my SCT tuner and to reset the engine light and it seemed all good. Drove to work this morning (30 miles) no issues. Went and ran a few errands at lunch and boom its back on. I checked all the air intake connections and everything looks good and tight there. I guess my question is should i take it to the dealer now to get the injectors and fuel pressure checked or what should be my next approach

 

I would start looking for an exhaust leak first. You might have a leak at the turbo or at the exhaust manifold where it connects to the head. If your truck has any type of extended warranty, I would bring it to the dealer. If not, try searching for the leak first and go from there.

 

It would be nice for people to let everyone know what a person has done already to rectify the problem ...including knowing a person researched the code and available info....just helps everyone instead of guessing. Saves you time because they are going to go down the list as suggestions and will save them time as well if it was already accomplished. IMHO

 

yes thanks Gremlin, and Red, I was more concerned about the clunk I was hearing and if the two were related. I have done the research on the code.

 

Thanks Gremlin...great answer....it helps everyone was kinda suggesting to OP to do what exactly you did...there is always a great description of malfunction, diagnostic recommendations, and possible solutions in order of things to do when you do some research. Then.....when you come to the forum you can post exactly what you have...AND....then what of those things you have done to remedy the problem yourself. Instead of having a code and possible description and expect someone to chime on on how to fix without doing any personal effort first...IMHO

 

The clunk you hear is normal. From what I understand, upon a cold start the Bypass Valve is pretty open as well as waste gates as the engine is running at a high idle for a cold start condition. Then, as the engine reaches a certain temp and RPM drop, you get the clunk of the bypass valve. Or it could be the wastegate. I forget which. Point is, it is normal.

As for the code.....

P0131 FORD - O2 Sensor Circuit Low Voltage Bank 1 Sensor 1
Possible causes:
Faulty Front Heated Oxygen Sensor Bank 1
Front Heated Oxygen Sensor Bank 1 harness is open or shorted
Front Heated Oxygen Sensor Bank 1 circuit poor electrical connection
Inappropriate fuel pressure
Faulty fuel injectors
Intake air leaks
Exhaust gas leaks

Tech notes:
Replacing the O2 Sensor 1 usually takes care of the problem

When is the code detected?
The voltage signal from the sensor is lower than the specified time.

Possible symptoms:
Engine Light ON (or Service Engine Soon Warning Light)
High Fuel Consumption
Excessive Smoke from Exhaust

P0131 Ford Description The front heated oxygen sensor (or O2 sensor 1) is placed into the exhaust manifold. It detects the amount of oxygen in the exhaust gas compared to the outside air. The heated oxygen sensor 1 has a closed-end tube made of ceramic zirconia. The zirconia generates voltage from approximately 1V in richer conditions to 0V in leaner conditions. The heated oxygen sensor 1 signal is sent to the Engine Control Module (ECM). The ECM adjusts the injection pulse duration to achieve the ideal air-fuel ratio. The ideal air-fuel ratio occurs near the radical change from 1V to 0V.

Read more: https://www.engine-codes.com/p0131_ford.html

::EDIT::
In other words, your passenger front O2 sensor closest to the turbo is getting low voltage. Most likely it is bad and needs replacing, but using the above information to diagnose the exact issue is recommended before just throwing parts at it.

 

Would be nice for Ops to also include definition/description of code they have pulled....this way you are not expecting for people to go look it up first....not every knows all the codes off the top of their head....a person may remember from personal experience but still would help