limp mode. 11A605 fault code

[mikeag96]

My Supra went into limp mode and threw a 11A605 - Fault code, while driving normally.

Only thing I've done recently, is reflash the latest version of Stage 2 (e40) OTS map and refilled up to e43ish. Can anyone take a look at some logs for me? TAI ??

Logs: https://datazap.me/u/mikeag/21-supr...1a605-fault-code-0?log=0&data=3-4-5-7-9-10-18

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[DVMKV]

Highly likely your LPFP isn't keeping up with that level of E.

 

[mikeag96]

Highly likely your LPFP isn't keeping up with that level of E.

I thought gen2 b58 was good for up to e50?

 

[baagel]

I thought gen2 b58 was good for up to e50?

Can confirm I've been running E50 for years on stock fuel pumps

 

[DVMKV]

It’s an arbitrary number and you’re close to that limit. Your log doesn’t include low pressure psi and your high pressure rail data looks consistent. Impossible to know without sufficient data

 

[razorlab]

Highly likely your LPFP isn't keeping up with that level of E.

You mean HPFP. Won't even be remotely close to maxing out the LPFP with the stock turbo.

 

[DVMKV]

You mean HPFP. Won't even be remotely close to maxing out the LPFP with the stock turbo.

Maybe I have a misunderstanding, I hit the same code last week after raising my e level as well.

His rail pressure stays consistent throughout the pull. I noticed I will get the same code if I spin and send RPMs flying. I contributed that to my second pump not turning on quick enough for the RPM spike, because I see HPFP rail pressure steady and LPFP pressure drop significantly. If your saying its a HPFP fault, how is this avoided then?

 

[razorlab]

Maybe I have a misunderstanding, I hit the same code last week after raising my e level as well.

His rail pressure stays consistent throughout the pull. I noticed I will get the same code if I spin and send RPMs flying. I contributed that to my second pump not turning on quick enough for the RPM spike, because I see HPFP rail pressure steady and LPFP pressure drop significantly. If your saying its a HPFP fault, how is this avoided then?

Your setup is very different it sounds like. It sounds like you are using port injection, which adds a sensor for fuel pressure on the LPFP side. OEM does not have a fuel pressure sensor on the low pressure side.

I'm not saying it's for sure his HPFP. The HPFP has a max angle of 126*, and you can easily hit that in low rpm with enough boost, especially with an OEM turbo. If you are 126* for long enough, and the high pressure fuel pressure at the rail drops far enough, you will get limp mode.

The OEM LPFP is good for around 750whp on a decent ethanol mix.

 

[DVMKV]

Hmm, its been a while so I thought you could still monitor the low side using MHD. New info for me. Appreciate the added knowledge

 

[Coqui]

Interesting , I been running MHD e40 ots with no issues. Recently I connected to tablet and it recommended to do map update for some mhd+ features. Did a 40 pull today and got same code

 

[mikeag96]

Interesting , I been running MHD e40 ots with no issues. Recently I connected to tablet and it recommended to do map update for some mhd+ features. Did a 40 pull today and got same code

I figured it was the new update.. smh

 

[Coqui]

Yea we will have to see if they bring out an update to fix it

 

[Slow4Banger]

Was this ever resolved?
Currently have a E50 tune by wedge performance but having the same problem.
Car was fine on the dyno (not loaded).As soon as I hit the street limp mode.
Did a few logs on the street and he revised the tune twice but same shit
Plan to hit the dyno today to get him a few decent logs.

 

[razorlab]

Was this ever resolved?
Currently have a E50 tune by wedge performance but having the same problem.
Car was fine on the dyno (not loaded).As soon as I hit the street limp mode.
Did a few logs on the street and he revised the tune twice but same shit
Plan to hit the dyno today to get him a few decent logs.

Got a log? With E50, probably maxing out the HPFP angle.

 

[Slow4Banger]

Here you go sir
I did manage to get clean run without it crashing out
https://datazap.me/u/slow4banger/street-run?log=0&data=4-19

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