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Old 09-19-2020, 02:48 PM   #1
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Yellow Check Engine Light - No Codes

2010 Discovery 40X with a Spartan chassis and Cummins 350 I6. Recently completed a 600 mile long weekend. Rig sat for two weeks, hopped in for a short cruise and 5 miles in got the check engine light. Brought the rig right back and used the onboard dash computer To check the code. Diagnostic says no codes. Any ideas what might be happening? Thanks in advance for any help.
2010 Discovery 40X
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Old 09-20-2020, 10:13 AM   #2
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You might ask Spartan about what can trigger it. The chassis builder puts the light on the dash and decides what causes it to turn on, so it's not necessarily an engine code at all. Maybe it's engine in the broader sense, including cooling system, fuel system, etc in addition to whatever the engine ECM produces.
Gary Brinck
Former owner of 2004 American Tradition and several other RVs
Home is in the Ocala Nat'l Forest near Ocala, FL
Summers in Black Mountain, NC
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Old 09-21-2020, 01:28 PM   #3
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Appreciate the response.
2010 Discovery 40X
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Old 09-21-2020, 09:19 PM   #4
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My 08 40X (FL chassis) was doing that on occasion. The check engine light would come on, then go off a few minutes later. No code was being set. It went off three times in a 40 mile trip and cleared itself each time. Mine turned out being low coolant in the overflow tank. It wasn't even down to the low coolant marker... Anyways, I filled it up and went out on a 250 mile getaway, and it never came on again...
2008 Fleetwood Discovery 40X
2015 Heartland Silverado 38QBS (BBQ'd due to faulty USB battery pack)
2001 Fleetwood Terry 25W (Sold)
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check engine light, engine, light

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