So if I get Autozone to read it they will have a better one and can more accurately determine it or will they more likely just narrow it down?

Either way I will find this Amazon tool useful if only it helps me understand a little better how the system works. Ergo, won't be so ignorant if a speak with a service guy about the problem.

I copied and pasted all the codes to my E320 folder, thanks for posting that

L

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Erwin Rommel