P1516 and P2101 on boosted E38

[minytrker]

What is the fix for P1516 and P2101 on a boosted E38???? Its a Procharged LS3 in an old car with a standalone harness.

[swingtan]

They ate probably just the ETC vs. actual air flow rational checks. I don't have EFILive with me ATM. But look for ETC settings under system.

[gmh308]

What is the fix for P1516 and P2101 on a boosted E38???? Its a Procharged LS3 in an old car with a standalone harness.

Is this an 09+? Or 08 and earlier? Those DTC's point to a throttle position error. i.e. boosted is pushing the throttle blade around. P1516 is the ETC controller and P2101 is the main processor ETC control. 09's seem more susceptible. Would be interested in how tuners are fixing this.

[minytrker]

Its an 08 PCM I think I will check today when I'm out tuning. Its on a brand new crate motor from GM...maybe 25 miles total on it now.

[minytrker]

They ate probably just the ETC vs. actual air flow rational checks. I don't have EFILive with me ATM. But look for ETC settings under system.

I tried maxing the airflow out but it didnt help.

[gmh308]

Its an 08 PCM I think I will check today when I'm out tuning. Its on a brand new crate motor from GM...maybe 25 miles total on it now.

Which crate? Does it have a gold or an alloy coloured throttle blade?

[GMPX]

Back in July we added the diagnostic parameters for P2101, if you update to the latest release HERE (http://forum.efilive.com/showthread.php?17096-Release-Candidate-2-Aug-19-2011) you should see them. C0807 & C0808.

[minytrker]

Back in July we added the diagnostic parameters for P2101, if you update to the latest release HERE (http://forum.efilive.com/showthread.php?17096-Release-Candidate-2-Aug-19-2011) you should see them. C0807 & C0808.

I was still running an older version and couldn't see those tables. I was out of town with no internet so I couldn't get online to check. Just did the update and have the tables now, that's exactly what I was looking for, thanks.

[gmh308]

Back in July we added the diagnostic parameters for P2101, if you update to the latest release HERE (http://forum.efilive.com/showthread.php?17096-Release-Candidate-2-Aug-19-2011) you should see them. C0807 & C0808.

Good add! :) Do these parameters also fix up any P1516 errors? Also see those from time to time without a blower.

Anything else added in the last 3 months or so for these "legacy" E38 non diesel controllers? :)

[GMPX]

Not sure on the P1516 DTC, maybe not because that is a TAC specific DTC, but who knows. Throttle DTC's tend to have a flow through that trips a few DTC's, and some DTC's cover several out of range situations.
The last three months, wow, lucky I keep a change log. This is since June.


Added some fuel flow factor tables for FSCM control (all ECM's).
Added some purge control tables.
Fixed address errors for H0157 & H0158 for some 2010/2011 E38 OS's.
Added some more idle tables.
Changed B7965 option to be modifiable.
Fixed address error for table B1848 on some late model OS's.
Added thresholds for P2101.
Added Low Oil Pressure warning controls.

That is just new additions or fixes, also of course in that lot is newly added OS support. Sorry, but I don't remember the specifics on the generic groups additions.

Cheers,
Ross

P.S - E38 being legacy = :grin:

[gmh308]

Cheers,
Ross

P.S - E38 being legacy = :grin:

Oki doki thanks. Yes just facing reality on the E38, even though in the conversion world it will be around for a while. :grin:

I just DL'd and installed 7.5 build 178. It seems to have messed with the USB drivers and now EFILive wont talk through the V2 to a controller anymore (T42) or comes back with messed up info (E38).

Is that correct?

Can this be reversed?

[joecar]

Ian,

Try this: Start->All Programs->EFILive->V7.5->Tools->USB Manager and click on Install USB 2.02.04 USB... maybe click on Uninstall USB drivers first.

[swingtan]

Sorry, I'd forgotten about this one.

What I'd look at is....


{C0805}: Add lots, you shouldn't need to max out every cell, but as you get higher in the TPS% range it can't hurt.
{C0806}: Again, add lots,you shouldn't need to max out every cell, but as you get higher in the TPS% range it can't hurt.

Note that both of these are "change" related settings, it's not an absolute measurement but an amount of change from the previous reading.

{C0807}: A new setting to play with. It may be worht trying to increase this value to see if it helps. I've never played with it and have no idea what it'll do though. Proceed with caution.
{C0808): As above.


Don't forget to check the FF's when the DTC's are set. They can hold additional inmformation about what condition actually set the DTC

If it really gets hard to tie down, you could try setting P2101 to "not reported" in the "DTC Type" settings. Probably not something you'd do on a long term basis, but for fault finding it may help.

Simon

[minytrker]

Sorry, I'd forgotten about this one.

What I'd look at is....


{C0805}: Add lots, you shouldn't need to max out every cell, but as you get higher in the TPS% range it can't hurt.
{C0806}: Again, add lots,you shouldn't need to max out every cell, but as you get higher in the TPS% range it can't hurt.

Note that both of these are "change" related settings, it's not an absolute measurement but an amount of change from the previous reading.

{C0807}: A new setting to play with. It may be worht trying to increase this value to see if it helps. I've never played with it and have no idea what it'll do though. Proceed with caution.
{C0808): As above.


Don't forget to check the FF's when the DTC's are set. They can hold additional inmformation about what condition actually set the DTC

If it really gets hard to tie down, you could try setting P2101 to "not reported" in the "DTC Type" settings. Probably not something you'd do on a long term basis, but for fault finding it may help.

Simon

setting P2101 to "not reported" doesnt work.....it will still go into limp mode just wont throw any codes

[JezzaB]

Sorry, I'd forgotten about this one.

What I'd look at is....


{C0805}: Add lots, you shouldn't need to max out every cell, but as you get higher in the TPS% range it can't hurt.
{C0806}: Again, add lots,you shouldn't need to max out every cell, but as you get higher in the TPS% range it can't hurt.

Note that both of these are "change" related settings, it's not an absolute measurement but an amount of change from the previous reading.

{C0807}: A new setting to play with. It may be worht trying to increase this value to see if it helps. I've never played with it and have no idea what it'll do though. Proceed with caution.
{C0808): As above.


Don't forget to check the FF's when the DTC's are set. They can hold additional inmformation about what condition actually set the DTC

If it really gets hard to tie down, you could try setting P2101 to "not reported" in the "DTC Type" settings. Probably not something you'd do on a long term basis, but for fault finding it may help.

Simon

Max C0803, C0804, C0805, C0806 all out

If it is actually pushing the blade open with the procharger, maybe a larger BOV?

[gmh308]

Ian,

Try this: Start->All Programs->EFILive->V7.5->Tools->USB Manager and click on Install USB 2.02.04 USB... maybe click on Uninstall USB drivers first.

Thanks Joe. Will try that very next chance I get. Is it different USB drivers that cause this problem with the HAPI and make it un-happy? :)

[gmh308]

Max C0803, C0804, C0805, C0806 all out

If it is actually pushing the blade open with the procharger, maybe a larger BOV?

LOL...then it would sound like a real doof doof... :) Ka-chooosshhh

[minytrker]

Still getting P1516 no matter what you change C0807 & C0808 to. It goes into limp mode as soon as you get into boost and let out to shift, it will throw P1516 every time.

[auspeed]

Still getting P1516 no matter what you change C0807 & C0808 to. It goes into limp mode as soon as you get into boost and let out to shift, it will throw P1516 every time.

Did you end up resolving this?

[auspeed]

From the OTHER FORUM


Open an E38 or E67 tune. Go into the Edit menu and hit "Add Slave Segment Data."
This was added to allow customers with aftermarket throttle bodies to adjust P1516 DTC thresholds that can cause the vehicle to go into reduced engine power mode. The feature has the nice side effect of being able to truly write entire an ECM (initialize another ECM with the exact same tune).
The slave segment section cannot be read back with the standard read process, but you can always add it this way.

Is this the same as editing C0807 & C0808 ??

[minytrker]

Did you end up resolving this?

Yes, had to edit the parameters in a hex editor and then use a cax file to load it into efi live.

[400ss]

im working on a 6.0L 2008 engine, with TH350 it is on a XJ cherokee, originally it has a 2007 silverado E38 tune,, i used GM MDI and put a VIN number from a 2007 6.0L corvette with manual trans, changued parameter for the injectors, maf, etcetera.. but it is showing the P1516 too, any help to fix it will be nice,, thanks everyone

[minytrker]

I always run matching TB, Pedal, and tune....either all corvette or either all truck.

[400ss]

that should be the problem ii will look for a TB and pedal, thanks alot

[04colyZQ8]

Yes, had to edit the parameters in a hex editor and then use a cax file to load it into efi live.

Do you mind sharing the CAX? and what did you change? getting P1516 on a 07 CTSV

[wesam]

+1 for aharing the CAX file
If you don't mind

[minytrker]

Its not mine to share, I didnt write it. I now use HPT they added the tables needed to adjust the tables yourself.

[04colyZQ8]

Its not mine to share, I didnt write it. I now use HPT they added the tables needed to adjust the tables yourself.

OK thanks, I fixed mine with Hp tuners, maxed the P1516 to 80% with HPT 3, and P2101 to 80% with efi live. Not thrilled about it seems like a work around, like to properly fix it?

Can you possibly share of PM me what it was called that you fixed? I might be able to get the info from someone if I know specifically what to ask for.

[Jim_PA]

OK thanks, I fixed mine with Hp tuners, maxed the P1516 to 80% with HPT 3, and P2101 to 80% with efi live. Not thrilled about it seems like a work around, like to properly fix it?

Can you possibly share of PM me what it was called that you fixed? I might be able to get the info from someone if I know specifically what to ask for.



Apologies for double, and perhaps quadruple posting this, but I'm at my wits end...

I'm getting a P2101 without the p1516 (LS1B) and could use some help... My issue only seems to be happening with higher IAT's though. Any pointers much appreciated! --

I'm using the LS2 TB with adapter harness. Issue has not happened to me all fall/winter, but now with higher temps, it's hitting limp mode at the most inappropriate times.