P219B?

Has anyone come across this one their truck? Came up on mine pretty recent, put it off for a while and finally took it a Toyota dealer, and their quote for everything as expected is pretty steep. ($4K parts and labor) My plan is to take it to other shops to see what their quotes are. so my question is, is it THAT serious to where I should get it fixed ASAP, and for anyone that has fixed it, is it something that should cost me less to do.

 

What have you tried so far to fix the issue? How many miles on the truck? What kind of driving do you do (highway/city)? Using quality gas? Compression test results? This could be one of a number of problems, maybe more than one. I'd want to try a few things before throwing $4K at the vehicle, unless the problem has already been pinpointed by an expert and all other (less-costly) causes have been eliminated.

 

What exactly is a P219B code?

 

afaik it's bank 2 a/f ratio out of spec.

 

Oh ok. Have you cleaned your MAF sensor and checked to see if the throttle body is opening up all the way when you hit the gas? Just guessing here because I don't know a whole lot about this stuff, but it's cheap to check!

 

ive had the o2 sensors cleaned and changed out since I had a different code come up a while back, I’ve got about 215K, mainly city driven, and used arco for the longest but recently began using chevron. And I haven’t had any compression test done.

Haven’t checked the MAF sensor. I’ll be honest, I definitely don’t have much knowledge when it comes to these things, so would these be things most mechanics be able to do, or are these considered something someone with much more experience would know?

 

You can clean the MAF sensor by just removing the cover over the engine, taking out the sensor and spraying it with MAF sensor cleaner. Do not touch the actual sensor part though, and be gentle with it. Look up a video on YouTube and you can see how it's done. May not solve your issue, but it could help!

 

First thing I'd do is pull the plugs and compare how they look. I'd expext at least one to look different from the rest. Plugs can tell you a lot. This code suggests an imbalance more than something common to all cylinders.

So...

Change all plugs if they look worn or their gaps measure wider than spec.

Check plug wires for cracking/deterioration.

Run 2 consecutive tanks of gas with fuel injector cleaner added. Or get your injectors pressure-cleaned by an independent who has a machine for that.

Is your intake manifold metal or plastic? If plastic, a hairline crack near a particular cylinder will cause that cylinder to run lean.

Check for vacuum leaks and/or a vacuum hose that's loose or dried out. Or one that's come disconnected.

Pull the air filter and see how dirty it is. Make sure the big duct is well-seated, i.e. not leaking anywhere.

IMO those would be reasonable places to start.

 

I just noticed your mileage & the fact they're mostly city miles. Carbon buildup is another possibility. Might try running some CRC intake valve cleaner, but only after the f.i. cleaner is totally out of the system. (Don't run them both in the same gas load. Run a full tank of just gas through, in between the 2 products.) You can check for carbon buildup with a bore scope while you have the plugs out.

 

Sorry but I keep thinking of things. I just checked your profile and it suggests you have a V6. If so, where are the cats located and how many? A cat for each side of the engine, i.e. 1 cat services 3 cylinders? If so, check those O2 sensors again. One might have loosened, or its wire gone dodgy either at the sensor end or the plug end. One might even have gone bad, and yeah, I know you replaced them, but there's a lot of junk out there. Re-seat the O2 electrical plugs to scrape away any corrosion or other gunk. Also, even a tiny exhaust leak can cause a false O2 reading, so there's another thing to check for. Or I should say "listen" for. Corroded exhaust pipe with a pinhole, loose or missing pipe clamp, that sort of stuff.

 

thanks a lot for all the info, I’ll definitely take a look at this.