Check engine light and weird error codes after flashing MHD Stage 2 (93) OTS Map

[mikeag96]

Interesting I don’t have any flex fuel kits installed yet I just got my ecu back from fetmo and the first flash did the codes and has been doing it ever sense. Any ideas?

Check your ECU connections. You could have some loose connections. I would go ahead and reseat all connections starting from back to front. Also, are you using the latest app version of MHD?

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[TimsSupra]

Will do this and report back. And yes I believe so let me double check.

 

[Hasan]

I had the same error codes and just cleared them with the MHD app and everything seems to be fine.

On the other hand the throttle seems to be overly sensitive at times. Does anyone have similar expensive.

 

[Rensuhlo]

I had the same error codes and just cleared them with the MHD app and everything seems to be fine.

On the other hand the throttle seems to be overly sensitive at times. Does anyone have similar expensive.

You can request a more linear throttle when you go custom tune.

 

[TimsSupra]

Same codes after the battery disconnect and ecu disconnect and reconnect. Any ideas?

 

[Habu]

Just got my ECU back from FEMTO and went through all the steps carefully to flash an MHD Stage 2 OTS map (93 Oct.) I'm getting a check engine light along with these codes.. anything to be concerned about?

MODs:
AA catted DP
AWE track exhaust
Visconti flex fuel kit

I got this same code 30E08 after flashing MHD OTS Stage 2 too. Expect the car won’t start now. I’ve flashed back to stock then back to OTS and still nothing. Even disconnected and reconnected the battery. I’m about to burn this damn car down.

 

[mikeag96]

I got this same code 30E08 after flashing MHD OTS Stage 2 too. Expect the car won’t start now. I’ve flashed back to stock then back to OTS and still nothing. Even disconnected and reconnected the battery. I’m about to burn this damn car down.

Shit. That's sucks man. Have you checked your battery? The charge might be too low. You also might want to check your ECU connections and make sure they're all properly seated. I would pull all the ECU connections and reconnect, from back to front, just to be sure.

 

[BMWAF]

I got this same code 30E08 after flashing MHD OTS Stage 2 too. Expect the car won’t start now. I’ve flashed back to stock then back to OTS and still nothing. Even disconnected and reconnected the battery. I’m about to burn this damn car down.

Did you solve this? I get the same code but my car starts and drives fine. The code seems to throw a CEL. Any more information? This is driving me nuts.

 

[bushido]

Did you solve this? I get the same code but my car starts and drives fine. The code seems to throw a CEL. Any more information? This is driving me nuts.

honestly? electrical tape over the CEL

 

[Timmy_Jones]

I also got a bunch of codes and a CEL for battery something (on a trickle charger) once I drive the car and turn it off / on again they all go away. I think this is oddly normal to see, but mine clear out.

 

[BMWAF]

I also got a bunch of codes and a CEL for battery something (on a trickle charger) once I drive the car and turn it off / on again they all go away. I think this is oddly normal to see, but mine clear out.

I get this one, that causes a CEL and doesn't seem to go away:

30E08 - Power management: Battery below upper startability limit.

Surely my battery isn't going bad after only 18 months.

 

[Habu]

I get this one, that causes a CEL and doesn't seem to go away:

30E08 - Power management: Battery below upper startability limit.

Surely my battery isn't going bad after only 18 months.

Did you solve this? I get the same code but my car starts and drives fine. The code seems to throw a CEL. Any more information? This is driving me nuts.

Yeah i got MHD+ to work with car now after sending the dme back to Femto. I don't believe I have that code anymore although id have to double check. I do have check engine light on most of the time due to my downpipe. If the car starts and drives fine just clear it and see if it comes back. If it comes back and starts still that would be kinda weird. Can check the battery voltage with a meter directly on the battery. I don't know if these cars can detect the cca load drawn during startup. If your battery is only 18 months old I'm sure its fine though unless you leave the accessories etc running with the engine off.

 

[Timmy_Jones]

I get this one, that causes a CEL and doesn't seem to go away:

30E08 - Power management: Battery below upper startability limit.

Surely my battery isn't going bad after only 18 months.

I am about to reflash, pending I pass state inspection here. Ugh. I will keep an eye on the codes when I go back to a new flash on the charger and let you know!

 

[Erty]

I get this one, that causes a CEL and doesn't seem to go away:

30E08 - Power management: Battery below upper startability limit.

Surely my battery isn't going bad after only 18 months.

Happens to me too. I just clear codes and it goes away...

 

[BMWAF]

I also got a bunch of codes and a CEL for battery something (on a trickle charger) once I drive the car and turn it off / on again they all go away. I think this is oddly normal to see, but mine clear out.

Mine seem to return randomly (after 100-200kms of driving) and doesn't appear to go away until I manually clear the code.

Yeah i got MHD+ to work with car now after sending the dme back to Femto. I don't believe I have that code anymore although id have to double check. I do have check engine light on most of the time due to my downpipe. If the car starts and drives fine just clear it and see if it comes back. If it comes back and starts still that would be kinda weird. Can check the battery voltage with a meter directly on the battery. I don't know if these cars can detect the cca load drawn during startup. If your battery is only 18 months old I'm sure its fine though unless you leave the accessories etc running with the engine off.

Your DP shouldn't trigger the CEL as you can tell MHD to code it out. I'm not 100% sure yet but I think my CELs are not DP related (I've set MHD to get my car to ignore them) and think this battery issue is actually causing my CEL. I also think the weird post flash iDrive gremlins I'm experiencing are due to this battery code too. Frustrating af.

Happens to me too. I just clear codes and it goes away...

I wonder what we have in common because this doesn't seem to be a common issue. I'm a February built, 2023 MT. Snap?

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