P0016 on a 60k mile car

[ermax]

That looks very similar if not identical to the newer version of the sprocket (has the inverted cam angle notches). But it requires the newer ECU too. What year is your car?

[TheStig85]

Originally Posted by ermax

That looks very similar if not identical to the newer version of the sprocket (has the inverted cam angle notches). But it requires the newer ECU too. What year is your car?

2013, but I updated the ECU (part no. 22765AC812)

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[Ultramaroon]

Originally Posted by ermax

That looks very similar if not identical to the newer version of the sprocket (has the inverted cam angle notches). But it requires the newer ECU too. What year is your car?

I think that's the original design, no? First were the notches. Then they switched to tabs.

[ermax]

Originally Posted by Ultramaroon

I think that's the original design, no? First were the notches. Then they switched to tabs.

Oh yeah your right. Got it backwards.

[humfrz]

Originally Posted by Ultramaroon

I think that's the original design, no? First were the notches. Then they switched to tabs.

And here ya'll were saying that ol Ultramaroon had gone senile ....... see, he still has most of his wits about him ......


humfrz

[steve99]

Originally Posted by TheStig85

What exactly is this "burn" in the ECU thing I've heard about before? I replaced my ECU about a year ago with the most recent part number, thinking it'd resolve the issue. Just wondering if I can suffer from this or not.

Originally Posted by rusty959

In every case I've heard about, the code keeps coming back even after the "broken" cam sprocket causing the code is replaced. Even a flash wont get rid of it once it is there. Once the ECU gets replaced, the code doesn't come back. Something about learned values or something that can't get fixed. Overall it makes no sense to me (and I'm a embedded software developer) but I'm sure there is a reason somewhere, even if it's a dumb one.

So you got P0016/P0018 and just replaced the ECU without replacing the sprocket and haven't had it come back?

Originally Posted by ermax

That looks very similar if not identical to the newer version of the sprocket (has the inverted cam angle notches). But it requires the newer ECU too. What year is your car?

Originally Posted by TheStig85

2013, but I updated the ECU (part no. 22765AC812)

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AFAIK all the ECU are same, ive replaced a few (or assisted people) used for example USA manual ecu in Australian Auto car, just flashed in correct Calibration to ECU. different years as well


Yes their are different calibrations for auto/manual, different year cars.


In the early cars their were several updates for example UAS manual cars


original calid was 400C then &00C, 900C A00C, A01C B00C and B01C


all those were factory "fixs" for rough idle, cam issues and Air con idle stability.


I suspect the cam fix was just widening the tolerances for throwing the cel codes or less aggressive management .


When you reflash or reset ecu (power off completely) it resets all CEL codes timers counters etc.


the only time you would need a new ecu is if its got a physical problem like the cam sensor input is stuffed or the cam output signal is stuffed on the ecu.


I don't understand the "burned in" issue people talk about I suspect its the ecu cam signal inputs or output channels that are damaged or faulty.


Otherwise all you need to do is flash the correct or updated ecu calibration to same ECU.


on a USA 2013 you want B01C manual or B01D auto, any of the earlier versions should be updated to those.

[Totalrecall]

Is this issue more likely to arise in a turbo car vs NA? Dont have Error but i do have a 2013 FRS about to turbo and this is scaring me. Not a permanent solution for it it seems.

[Jamestl]

So my issue came back a few weeks ago and due to the storms I've not had a chance to drive the car. Today I did a hard reset on the battery and then switched the position sensors (i swapped these back in Dec and it seems to have made the issue go away) back to the original banks, and the lights came back on quickly... So now back to the same issue. I may just try to order new position sensors and see if that makes this go away since swapping them before seems to have resolved the issue (for a little while). Ugh this damn thing is so frustrating to fix!!

[ermax]

Originally Posted by Totalrecall

Is this issue more likely to arise in a turbo car vs NA? Dont have Error but i do have a 2013 FRS about to turbo and this is scaring me. Not a permanent solution for it it seems.

I can’t think of any reason why FI would impact VVT at all in any way.

[steve99]

Originally Posted by Totalrecall

Is this issue more likely to arise in a turbo car vs NA? Dont have Error but i do have a 2013 FRS about to turbo and this is scaring me. Not a permanent solution for it it seems.

Often tunes either na or fi will use the vvt system differently than the stock tune. This can sometimes uncover latent issues in the vvt system.

The ecu monitors the commaned position and the actual position of the cams if this differs too much or the actual position lags the commanded position by a certian time then the ecu will set one of these cam codes, or if it detects an issue with the sensors or actuators . Its not rearly a fault in the tune, more the tune showing up a fault that was already there

[steve99]

Originally Posted by Jamestl

So my issue came back a few weeks ago and due to the storms I've not had a chance to drive the car. Today I did a hard reset on the battery and then switched the position sensors (i swapped these back in Dec and it seems to have made the issue go away) back to the original banks, and the lights came back on quickly... So now back to the same issue. I may just try to order new position sensors and see if that makes this go away since swapping them before seems to have resolved the issue (for a little while). Ugh this damn thing is so frustrating to fix!!

You need to definitively isolate the problem, suggest you use the proceedures in the tsb. Else you will likey throw lots of money at this issue and not fix it.

The first thing eould be to make sure your ecu calibration is the latest for your car, theor were some fixes in ecu firmware directly for this issue in 2013 and earlier cars

[Jamestl]

Originally Posted by steve99

You need to definitively isolate the problem, suggest you use the proceedures in the tsb. Else you will likey throw lots of money at this issue and not fix it.

The first thing eould be to make sure your ecu calibration is the latest for your car, theor were some fixes in ecu firmware directly for this issue in 2013 and earlier cars

I’ve already swapped the OCVs and that didn’t do anything. I then swapped the position sensors and that worked for about six weeks before the lights came back on. And now now swapping does anything anymore.

So I’m thinking of getting new position sensor to see if it might work (relatively cheap). After that it’s a new ECM. Really don’t want to touch the sprockets because it’s super fucking expensive and I don’t think it’s necessary (car runs fine otherwise). We’ll see.

Also it’s on latest file version.

[Jamestl]

Question for everyone - what’s the correct part number for the ECM? I seem to see conflicting posts about whether I need a later model ECM from various posts (on this issue and unrelated threads on switching ECMs). Thanks much!

[TheStig85]

Originally Posted by Jamestl

I’ve already swapped the OCVs and that didn’t do anything. I then swapped the position sensors and that worked for about six weeks before the lights came back on. And now now swapping does anything anymore.

So I’m thinking of getting new position sensor to see if it might work (relatively cheap). After that it’s a new ECM. Really don’t want to touch the sprockets because it’s super fucking expensive and I don’t think it’s necessary (car runs fine otherwise). We’ll see.

Also it’s on latest file version.

Well the ECM will cost around $400+, whereas the sprocket is $150 each. But assuming the sprocket is the issue, you just need 1.

I have a 2013 BRZ and the dealer told me the latest part number was: 22765AC812

As per the B01C revision for the flash... I have no idea. If you find out, let me know, but I already replaced my ECM recently with that part.