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Old 10-03-2022, 11:43 AM   #1
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Question Check Engine Code Reader for Cummins 5.9?

RV sis a 2006 Holiday Rambler Neptune 36BST with Cummings 5.9.

I installed the AG Diesel Solutions module and now the Check Engine & ABS lights are displayed.

Is there a place to plug in to an OBDII port? Has anyone used an Actron CP9185 to do so, or will I need a different code reader?

I will work with the vendor on why, but I would like to be able review and clear codes as I do on my other vehicles.

The RV is not where I live, so trying to gather proper tools and knowledge before heading back there @70 miles away.


Thank you!
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Old 10-03-2022, 06:06 PM   #2
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You diesel motor home doesn't have an automotive OBD II diagnostic plug .

You'll have to find the diagnostic plug shaped like the one in the picture below and have the correct tool for diagnostics .

Red arrow on the left edge of this photo of a later year Monaco front power center , compartment below the driver.
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Old 10-03-2022, 08:11 PM   #3
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Quote:
Originally Posted by Skip426 View Post
You diesel motor home doesn't have an automotive OBD II diagnostic plug .

You'll have to find the diagnostic plug shaped like the one in the picture below and have the correct tool for diagnostics .

Red arrow on the left edge of this photo of a later year Monaco front power center , compartment below the driver.

Thanks Skip, but do you know what tool will work? or how I identify it?

Maybe the Type 2 Green J1939 9pin Female to OBD2 Female Cable at Amazon: https://www.amazon.com/Arteckin-Gree...dp/B07MTCGYHV/
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Old 10-04-2022, 12:22 AM   #4
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The adaptor from Amazon is to use a truck reader on a car .

I do not believe there would be the reverse adaptor because the software differences in the diesel motor home engine control module. An automotive OBD II reader won't work .

The J 1939 is a nine pin unit I believe your coach's diagnostic plug will have fewer ' my 99 Freightliner does.

Many members have gone to dash readout systems , like Scan Gauge D or Silverleaf . I lost the links to these two suppliers when a hard drive failed in my last laptop.
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Old 10-04-2022, 07:43 AM   #5
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Quote:
Originally Posted by Skip426 View Post
The adaptor from Amazon is to use a truck reader on a car .

I do not believe there would be the reverse adaptor because the software differences in the diesel motor home engine control module. An automotive OBD II reader won't work .

The J 1939 is a nine pin unit I believe your coach's diagnostic plug will have fewer ' my 99 Freightliner does.

Many members have gone to dash readout systems , like Scan Gauge D or Silverleaf . I lost the links to these two suppliers when a hard drive failed in my last laptop.
Thank you again.

I easily found the ScanGauge D and also the ScanGauge SGDFFP. I can't find a comparison, but the ScanGauge SGDFFP is available and less expensive, so I have ordered it. This does come with an connector with two heads, one for the 6 pin and the other for the 9 pin.

Hopefully this will give me all I need, and a bit more
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