Lambda Shield stuck heating

Support forum for the Lambda Shield designed to connect Bosch LSU 4.9 wideband oxygen sensors to Arduino projects.
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Joined: 11 Jul 2018 20:22

Lambda Shield stuck heating

Post by Terrigeno » 11 Jul 2018 20:47


we had a problem with our lamba shield and the capacitor (C5) broke / snapped from the board during instalation.
We tried soldering it again and we made a test. The shield turns on but the heating led starts blinking and doesn't stop.
I tried opening the software but it just keeps "heating" but is doesn't ever heat.

Any ideas what may be causing this problem? What can we do?

thanks in advance,

Terrigeno Team
Last edited by Christian_Bylund on 30 Jul 2018 21:34, edited 1 time in total.
Reason: Edited title for a better description of the problem.

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Joined: 07 Mar 2015 18:09

Re: Lambda Shield not working!!!

Post by Christian_Bylund » 12 Jul 2018 10:40


Unfortunate with the C5 capacitor. Assuming that you have soldered it in place and it is working. It sounds like you are using a non original sensor. Please confirm you are using an original Bosch LSU 4.9 wideband sensor? If it is an original Bosch sensor, please let me know the pnc of it.

Thank you.
Best Regards,
Christian Bylund
Bylund Automotive AB

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