# EMP Pro 5v A and B incorrect in documentation

**URL:** <https://community.ecumaster.com/t/emp-pro-5v-a-and-b-incorrect-in-documentation/4383>\
**Category:** EMU PRO\
**Created:** [September 12, 2025, 9:36pm UTC](https://community.ecumaster.com/t/emp-pro-5v-a-and-b-incorrect-in-documentation/4383 "2025-09-12T21:36:44Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![ProperTuningOG](https://dub1.discourse-cdn.com/flex013/user_avatar/community.ecumaster.com/propertuningog/32/3481_2.png) [@ProperTuningOG](https://community.ecumaster.com/u/ProperTuningOG)\
**Post date:** [September 12, 2025, 9:36pm UTC](https://community.ecumaster.com/t/emp-pro-5v-a-and-b-incorrect-in-documentation/4383/1 "2025-09-12T21:36:44Z")

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We have found a bit of a misprint in the pinout. 5V A on connectors A and B registers as 5vB in the ECU. 5v B on connector C registers as 5vA in the ECU.

We noticed this on an ecu that would not provide voltage to the cam and crank sensors, which were wired to 5v A according to the pinout but the ECU shows 5vB with a fault. All other sensors that are on 5vB according to pinout have 5v and are working as 5vA in the ecu shows it is supplying 5v.