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I had the same problem.

Mine would work on my LB7 (VPW). But anytime I would hook up to a CAN (Cummins) circuit it would give me the same code.

When I would store my V2 I kept all the cords...

Well I think I finally figured out my problem.

My brother ordered a new V2 to OBDII cable last week.

Today while I was trying to scan a 2011 LML for the ECM serial number I was having the...

Well I think I finally figured out my problem.

My brother ordered a new V2 to OBDII cable last week.

Today while I was trying to scan a 2011 LML for the ECM serial number I was having the...

So yesterday I went and tried testing on a different 06 Cummins. I was updated to the most recent ones available. The truck has a CPS5 switch that is connecting into the OBDII connector and then I...

I have a 2006 Cummins that I cannot connect to.

I use just the V2 to scan for codes and it fires up just fine I go and try and scan for codes and it says: Error $0280 cannot connect to ECM

I...