CEL U0037
 

I tried looking this up online, but the only information I can find for CEL U0037 is "Communication Bus A" and/or "Communication Bus B"

Anyone have any idea what this is, what may have caused it, and any possible solutions to fix it?

I don't remember which code it was but I had a few network related ones when I use my Bluetooth obd adapter with my ecutec tune. I just clear it with torque but it's annoying. One time just got gas, and got the cel starting up the car.

I removed my bluetooth adapter from the OBDII connection, shut the car off, turned the car back on, and the CEL was still there.

I guess I'll clear the code, and hope it doesn't come back on.

I appreciate your assistance.

I've seen it before on my car with the Bluetooth adapter - under the impression that it causes some disruption in communication between ecus in the car. Once tripped it seemed to hang around - needed to use ecutek (or torque) to clear the code - once it was cleared it didn't come back... Yet. Seems from reading the knock off adapters cause it more often than not.

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Is that possibly a typo for 0073? If so, that's from using torque or any other BT app - occurs when the app is connected to the adaptor before the car is turned on. You should only connect the BT after car is on to avoid 0073. It's safe just to clear if it is 73.

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