# ADU fuel level calibration set up help please!

**URL:** <https://community.ecumaster.com/t/adu-fuel-level-calibration-set-up-help-please/5186>\
**Category:** ADU\
**Tags:** how-to\
**Created:** [February 3, 2026, 4:27am UTC](https://community.ecumaster.com/t/adu-fuel-level-calibration-set-up-help-please/5186 "2026-02-03T04:27:47Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![mfudala\_ECUMASTER](https://avatars.discourse-cdn.com/v4/letter/m/ac91a4/32.png) [@mfudala\_ECUMASTER](https://community.ecumaster.com/u/mfudala_ECUMASTER)\
**Post date:** [February 3, 2026, 6:44am UTC](https://community.ecumaster.com/t/adu-fuel-level-calibration-set-up-help-please/5186/3 "2026-02-03T06:44:21Z")

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Start by changing the pull-up resistor. 56kΩ is far too high for a 110Ω sender. Try a 100Ω resistor instead, this will significantly improve your voltage resolution. Also, take a look at this topic: [Calibrating fuel level](https://community.ecumaster.com/t/calibrating-fuel-level/3352)

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