Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
Jayco RV Owners Forum

Thread Tools Search this Thread Display Modes
Old 06-08-2020, 11:43 AM   #1
Junior Member
Join Date: Apr 2020
Location: The Villages
Posts: 10
Code Reader for S2RV with Cummins Engine

As this request will demonstrate, I know just enough on this topic to be dangerous.

Having said that, does anyone know the protocol for using a code reader with the 2019 S2RV Freightliner Chassis with the Cummins 360 HP engine? One is OBDII but there are others.

Full disclosure, I had a check engine light pop up on a recent return trip and ordered and received a NEXAS NL102 Reader that is supposed to work with several of the protocols.

However, by the time I received it and went to the storage location, the code had cleared itself so I don't know if the code reader is the correct one and I don't know what caused the check engine light.

Thanks for any assistance,

Jim Duncan
2019 Seneca 37RB
Jpdunc9251 is offline   Reply With Quote
Old 06-09-2020, 06:52 AM   #2
Senior Member
Join Date: Apr 2018
Location: East st paul
Posts: 140
Failure codes

Most vehicle computers store the codes even after the engine light has self reset. You should try the code reader to see any stored codes. The code history should be there.
Superseneca is offline   Reply With Quote
Old 01-26-2023, 11:05 AM   #3
Senior Member
Rustynuts's Avatar
Join Date: Oct 2017
Location: Oregon Coast
Posts: 2,817
Freightliner uses J1939 protocol, many have tried cheaper readers or adapters for OBD2 readers that say they will work only to find out they don’t. Many codes that pop up and clear usually lead to a sensor showing a high or low voltage reading in the ecu’ s scanning cycle and it will hold that code for 3 keyed run cycles of 5 minutes or more. If the ecu does not see any issues within these 3 key/run cycles, it clears. Most scanners for trucks are expensive but IMO the best alternative is Bluefire for Motorhomes, it can be used as a Bluetooth engine monitor but also can be used to read and clear codes. The module plugs right into the port and connects via Bluetooth to a free app, I monitor many vital things on mine on an iPad mini mounted above the drivers seat and can monitor things like DEF temp and quality. If you do a search on the forum, you will find a lot of information on this system.
Attached Thumbnails
9F656631-4307-410F-8187-AA5716A03058.jpg   42C5A3BE-06D9-44EE-B01F-40B531C5F84D.jpg  
Brian & Jeannie
2018.5 Seneca 37RB with to many mods to list
2015 Jeep JKU Rubicon

Rustynuts is offline   Reply With Quote
Old 01-26-2023, 01:14 PM   #4
Join Date: Jan 2021
Location: Central Ohio
Posts: 79
I bought the Bluefire adapter and used its software on my iPhone to see the cause my my dash check-engine light, and to reset it. Better than a dedicated code-reader, since it shows all the real time data, and its super easy to use.
EricM22 is offline   Reply With Quote
Old 01-26-2023, 01:49 PM   #5
Senior Member
Join Date: Apr 2019
Location: Bismarck
Posts: 293
X2 on the bluefire
There is a lot of information on it in this thread:
Bob and Angel
2006 Seneca 34SS (sold)
2018.5 Seneca 37HJ w/2013 GMC Sierra
Instagram @wanderingpeaches
rpietsch is offline   Reply With Quote
Old 01-27-2023, 10:13 PM   #6
Senior Member
DonkeyFluffer's Avatar
Join Date: Sep 2018
Location: Knoxville
Posts: 264
Yep, Bluefire. Mounted like Rustynuts on a cheap Android 8" tablet in the same location.
I have my OBD first going to a splitter so I also can have my Scangauge-D running.

Redundant? Can be, but I keep different info displayed and already had the floor console with the Scangauge cutout before I knew of Bluefire. So I use the Scangauge for tracking instant and average MPG's and fuel used. The Bluefire is for engine data, temps, DEF info, etc.

I'm happy with it.
DonkeyFluffer is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

This website is not affiliated with or endorsed by Jayco, Inc. or any of its affiliates. This is an independent, unofficial site.

All times are GMT -6. The time now is 09:58 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2023, vBulletin Solutions, Inc.
Copyright 2002-2016 Social Knowledge, LLC All Rights Reserved.