Check Engine Code P11EC

I have no idea. I am in the first couple of stages of grief. THought I could buy a Toyota and it would last till it rusted apart. Oh well. At the rate of new trucks, I may be just fooling myself. Might be a good idea to get it fixed suck up the 6K and just roll with it. It is a bad feeling that I cannot shake, but all the other trucks have issues that pop up at various statistical rates. The problem is that this one is seeming so rare that us folks that got it get no real love from the manufacturer. this one is expensive enough that I think if I was a corporate money dude I would make sure this is statistically buried to make sure we didnt lose the Toyota corporate shirts over it. It would be interesting to really see behind the curtain as to how many of these there really are.

 

You're right, everything else out there is probably going to have some issues too. They all build some good ones, and they all build some bad ones. At this point it's luck of the draw.

 

I too have the infamous P11ec. Truck is out of warranty. Runs perfect. Change oil every 5k, all scheduled maintenance etc.

I can’t imagine it’s actually a burnt valve/ruined head so thinking it could be a faulty fuel injector?

Anyone else come across any other “simple” fix?

Thanks for your input.

 

Most likely it is a burnt exhaust valve. Commonly, the engine drives fine at mid to high loads. You see issue at a lower RPMs and at idle. Do a compression/leak test

 

Interesting. Will get some diagnostics done.

If it is a burnt valve and the repair is a new head and valve to improve idle and correct the code, is anyone aware of any downside of delaying the repair and driving it until it gets noticeably worse? If the only issue is with cylinder 1, wouldn’t the repair of a new head and valve still be the repair?

 

Compression test came back normal. Is the sensor to detect p11ec that sensitive?

any thoughts?

 

this is how ECU monitors and reports the imbalance.


Start with obvious items: intake for vacuum leaks, spark plugs, port injector&direct injector for that cylinder. AFR sensor is the last on the list. Do you have any other codes?

 

They will come back in the normal range most of the time. It's the leak down test that fails. Have a leak down test done of the effected cylinder. You WILL get leakage out the exhaust. Every one I replaced all had leakage out the exhaust. Tech Stream has the ability to to a "running compression test" and it clearly shows which cylinder is down on compression. The piston speed of the effected cylinder will be higher than the others.

 

Interesting. Thanks for chiming in.

I think I will bring it in for further testing then. Sounds like you have repaired this before?

I hate that (like others whom it has occurred to) this occurred right outside of warranty, I'm past mileage but within the 5yrs. 6-8k for an out-of-pocket repair feels like the price of a slightly used engine... If you've worked at Toyota before, is there a path where Toyota helps cover this as a service even though my truck is outside of warranty? I've babied my truck, 5k oil change intervals all at Toyota, drive like a grandma, never off-road driven or tow, etc. This issue hasn't been recalled nor can I find a Service bulletin-- it's just bewildering that this is not a manufacturer error and instead something I've deliberately done to cause this issue. Thanks for your help!

 

No other codes. Will take a look at connections this week. Sounds like leakdown may show problems according to @rolled93slc

 

My question is: is Toyota replacing the cylinder head, or at least the valve with an updated version, or the same junk that failed the first time?

 

Ive done about a dozen of these. It has been an exhaust valve that isn't sealing every time. IF you have done all or the majority of your work at the dealer. Ask them about Goodwill. All dealers have a specific amount they can Goodwill. Or you can always reach out to the Toyota Customer Care number. Explain the situation, that you are a loyal customer, and you know that this is a known issue. Be polite. I have seen Toyota help people out in the past on other issues.

 

They have a new part number for the head. The had and all valves and seals get replaced.

 

Thanks. Do you know if later model years receive this updated design, or does this problem plague all years of the 3rd gen? Seems like it is mostly happening to 17's and 18's

 

The majority I have done were 18-19. I have seen a very few 20-22 people post about this. But you have to think about just how many 2GRFSK engines Toyota has produced. The actual failure rate is very very small.

 

Fair enough. Any way to confirm if my truck already has the revised part number cylinder head/s on it?

 

Thanks for your input and advice @rolled93slc!! All work has been done except my purchase of 6 spark plugs from that same dealer for 60k spark plug replacement, air filter changes every 30k, and my yearly cabin filter change. Would that be sufficient for the "majority" of work consideration?

I'm curious how I should go about bringing it into my dealership? I'm aware of the code and I'm almost at 5k miles so I can use an oil change appointment to bring it up. Should I pay them for additional diagnostics or just state the problem code and that I'm aware of it from the start and ask politely for Goodwill service? My whole family drives Toyotas and I obviously love my truck (outside of this issue). Thanks again!

Legitimate question @Captain Dirty Beard asked. It seems to be only allocated to 17'-19' v6 models. Brother has 16' with more miles than mine and he really pushes that truck to its limits and has no issue. Probably a small batch had head issues and sometimes the luck of the draw falls outside of your favor (whether that's your model or the issue occurs outside of warranty).