[Homebrew]

Hey y'all. Been lurking around this forum for a while and it's been extremely helpful in my quest to buy an F150 EB.

I just bought a 2013 F-150 EB Platinum from a re-builder from Chicago. On my way home with it, I stopped and filled it up with some 93 octane and as soon as I pulled out of the gas station it popped a CEL for P2098 (bank 2 post cat lean). I called the dealer and he said he had been driving the truck for a few weeks and never once had a CEL pop up.

I take the truck to my local mechanic and we find it has a warped driver's side exhaust manifold and we figure that's what's causing it to lean out. Got that fixed and the darn thing is still throwing the P2098 code! Drove the truck for quite a while to get the fuel level down under 1/4 tank and filled it up with 87 octane thinking I got some bad gas... Code still popping up.

Over the course of all of this, I did learn that it has a solo offroad down pipe (I'm 99% sure it is catless) and it may or may not have an SSI tune.

I watched the O2 sensors on my OBDII live scanner and bank 2 is up around -17% long term fuel trim and bank 1 is only around -3%. The upstream O2 sensor on bank 2 is also reading about .5amps higher than the one on bank 1. The downstream o2 sensors read pretty close to each other.

Any other ideas? If it does have a tune on it, then I'd think it wouldnt even pay attention to the rear O2 sensors, or what else could pop this code? If, somehow, it got returned to a stock tune then wouldnt I have a P2096 code as well since the cats are out of it? O2 sensors are tight and connections look fine.

Also, my fuel economy is kinda garbage in my opinion, been driving it like an old man and cannot get above 14mpgs.


TL;DR -- Popping a code for lean on bank 2 post cat, solo offroad DP, and maybe SSI tune, lost?


Thanks fellas!

 

[RedRooster]

First off ya need to know what DPs ya have...if it has cats you will see them and Mfg. Then I would want to know about tune....OEM or aftermarket.....tune is not going to shut off downstream O2s is most cases. Take your OBDII scanner pull Strategy and see if it is an OEM flash. If it's not I sure would want to get OEM back onboard until you get figured out. Warped exhaust manifold is going to let in extra air/O2 and will be sensed as running lean by downstream sensor. PCM will be compensating by actually running richer which looks to be showing up in LTFT and crappy gas mileage. Unburned fuel can saturate upstream O2 sensor for that bank and also making your Cat burning hot...if its there...so can burn it out and cause inneficiency problems. You got some more homework to see what you actually have for hardware and software. If the Cats are there compare color of them...you will see if bank 2 is running hotter. Place to start anyway and go from there. Good job on doing some homework up front I would be a little pissed at dealer if they sold this outright without providing mod info to you. Go back to them and chew some arse.

 

[RedRooster]

Here is some more reading for ya.

https://www.obd-codes.com/p2098

 

[Homebrew]

Thanks RR. I'm pretty darn sure that these are the solo offroad DPs since they have that angled resonator thing in them. Also, the exhaust smells like fuel... It was a rebuilder/dealer, they got this from the auction block and fixed it up, they didnt know what was going on with the engine side. I'm not too angry at them, they're helping me out with the service bills till it is good to go.

I can't figure out how to check the engine s/w with my blue driver. I'm really debating between getting a stock DP back in there and having a local dealer flash the engine back to stock, or having another tuner in town do a custom tune to it. But like you said, I don't think that code is going to go away.

 

[Homebrew]

After we replaced the warped manifold, does the truck have to relearn the fuel trims? I've reset the codes a few times with my scanner, but is there a more "in depth" type of reset to get my fuel trims back to 0? Pull the battery for 15 minutes?

I really don't think I have an exhaust leak anymore and there are no other codes present.

 

[TX-Ripper]

Welcome to the forum

 

[winchested]

If it is tuned first thing you need is for a Ford dealer to flash you back to stock then you need to buy a Tuner and get some real tunes. Stay with SSI tune and cablammy!

 

[Homebrew]

If it is tuned first thing you need is for a Ford dealer to flash you back to stock then you need to buy a Tuner and get some real tunes. Stay with SSI tune and cablammy!

I'm getting it to a local tuner sometime in the next few weeks. I've not read many positives about SSi tunes. I'm just trying to figure out this darn code before I take it over to the guy.

 

[winchested]

Its likely due to the downpipes. Even with cats they can be too high flowing for the O2 sensor to handle. The code can likely be killed by a tuner or you need O2 bung extenders installed.

 

[Homebrew]

Its likely due to the downpipes. Even with cats they can be too high flowing for the O2 sensor to handle. The code can likely be killed by a tuner or you need O2 bung extenders installed.

Thank you! I'll call Solo tomorrow and see if/what extenders they recommend. I poked around underneath the truck a bit and it doesnt seem like there are any extensions up there.

If anyone has any other things they can think of to check out let me know! I've been going crazy researching this, all the way to thinking my engine is gonna blow. (although I can almost convince myself I'm dying after a rabbit hole type WebMD search on a hangnail)

 

[winchested]

There is a huge thread on here which details which extenders to use.