Voltage issues, supply voltage b+ lower limit exceeded

[jtoribio6954]

I’m getting the fault code supply voltage b+ in my abs control module and it’s causing crazy electrical issues. Headlights turn on and off, radio, climate control, and cluster all turn off and on and it feels like I lose power steering while turning when that’s all happening while I’m driving. Any idea what’s causing this?

[papadelogan]

Check your connections & grounds first. Make sure they are clean and solidly connected.

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[jtoribio6954]

Everything looks fine, it doesn’t seem to be a grounding issue

[B7S3wannabi]

Alternator


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[jtoribio6954]

Alternator did not fix issue

[B7S3wannabi]

What was the most recent work performed on the vehicle prior to your issue?


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[canadianA4B7]

Fried board somewhere. Check for water under seats, and under your ECU. If multiple devices are funking out you can usually bypass a ground unless you confirm all devices share that 1 ground. Certainly sounds like a board or brain (computer/control module) of some sort has gotten wet.