# Emu Pro - DBW Calibration Error

**URL:** <https://community.ecumaster.com/t/emu-pro-dbw-calibration-error/5591>\
**Category:** EMU PRO\
**Created:** [April 14, 2026, 5:11am UTC](https://community.ecumaster.com/t/emu-pro-dbw-calibration-error/5591 "2026-04-14T05:11:58Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![tunedbychen](https://avatars.discourse-cdn.com/v4/letter/t/85e7bf/32.png) [@tunedbychen](https://community.ecumaster.com/u/tunedbychen)\
**Post date:** [April 14, 2026, 5:11am UTC](https://community.ecumaster.com/t/emu-pro-dbw-calibration-error/5591/1 "2026-04-14T05:11:59Z")

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Hello All,

i’m having trouble to calibrate the Stock DBW on a LSA engine.

context…

Wiring is Correct - Before me, car was tuned on the same Emu and the dbw worekd, i deleted the map [=

when i move the TB by hand the the TP main signal and the check signal moves great.

but when i try to calibrate it’s seems that the TB wont move at all.

test function on the DBW section is odd.. it wont move the TB, but when i select and then Unselect the “reset command” function

![image](https://europe1.discourse-cdn.com/flex013/uploads/ecumaster/original/2X/4/493fd61e8310c8725acd7543395de06c856034f6.png)

it will start buzzing and will work but just a little bit, it will move from it’s parking position (24%/20%) about 2-1% tnd that is it.

same if I Unselect the H-bridge 1 and go to tools \> test outputs \> then select the H-bridge1b  
when i select the H-bridge1a - wont move / wont buzz

iv’e attachen logs and maps.

verified

- inputs and outputs
- wiring
- voltage min and max on all sides
- different Hz frequency
- current limit
- accelerator pedal calibrated X2
- error flags check (useless… )

**cannot attach file so here is a google drive link**

> **[DBW Problem - Google Drive](https://drive.google.com/drive/folders/1KI2MLpkJ253arKD7AmFMvFzFo4X3wB-C?usp=sharing)**

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<div class="post-metadata">

**Author:** ![mkuklis\_ECUMASTER](https://dub1.discourse-cdn.com/flex013/user_avatar/community.ecumaster.com/mkuklis_ecumaster/32/104_2.png) [@mkuklis\_ECUMASTER](https://community.ecumaster.com/u/mkuklis_ECUMASTER)\
**Post date:** [April 14, 2026, 2:53pm UTC](https://community.ecumaster.com/t/emu-pro-dbw-calibration-error/5591/2 "2026-04-14T14:53:11Z")

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Hi,

H-bridge 1 is in an error state: “Short to ground OUT B”. This error occurs when too much current flows through the output. In this state, the H-bridge is disabled, and the output will not turn on.

There are a few possible reasons for that:

1. EMU side - H-bridge is damaged and reports incorrect status.
2. Wiring - short circuit, wrong connections.
3. Throttle side - burnt motor, too much friction.

You need to test which one is the culprit:

1. Switch to another H-bridge. If it works, something is wrong with H-bridge 1 or the connection to the EMU.
2. Disconnect the throttle body connector and test as usual. There should be no errors from the H-bridge in that situation.
3. Switching to a different TB will confirm that.

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<div class="post-metadata">

**Author:** ![tunedbychen](https://avatars.discourse-cdn.com/v4/letter/t/85e7bf/32.png) [@tunedbychen](https://community.ecumaster.com/u/tunedbychen)\
**Post date:** [April 15, 2026, 5:31am UTC](https://community.ecumaster.com/t/emu-pro-dbw-calibration-error/5591/3 "2026-04-15T05:31:41Z")

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Hello.

Thank you for your replay.

I chased the wiring, fixed it.

Now the dbw calibration works flawlessly.

Thx