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Old 07-12-2019, 06:59 PM   #1
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Check engine light on....

Took the Ultimate Freedom out to dinner. About 20 mins 8n the check engine light came on with the steady alarm. All the gauges looked good. Got to our destination and checked the oil. It was on the add mark. I had been running the generator with the AC running. Turned the gen off, but didn't make a difference.

Shut the motor down, started it back up and no light. Doesn't mean it wont come back on going home...

Not sure what's going on.... Help!
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Old 07-12-2019, 09:05 PM   #2
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Well, on the 30 mile ride home, no engine light...
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Old 07-13-2019, 06:11 AM   #3
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I have had off and on engine light for over a year now with no understanding yet of what makes it come and go. I thought it might be the air cleaner but didn't seem to help....
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Old 07-13-2019, 07:17 AM   #4
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If it keeps happening I'll bring it in and have the code checked. The alarm is obnoxious.....
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Old 07-13-2019, 07:52 AM   #5
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Try buying one of these to check your coach!

https://www.amazon.com/dp/B00652G4TS...v_ov_lig_dp_it
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Old 07-13-2019, 12:34 PM   #6
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Remember all the sensors have connectors and there are inline connectors going up to the dash. With an intermittent like that, I'd clean, remove, contact spray, reconnect/disconnect several times any and all connectors I could find starting at the engine's ECM. I'd also chase the wiring bundles and make sure none of them have been worn through.

I looked at that OBD II device link shown above and I didn't see where it said MD, HD (Medium and/or Heavy Duty). That's what a truck chassis requires in a OBD II reader, that HD designation for them to display the problem codes correctly.

This one would probably work: XTool

Might need a Y adapter if you have one of the older 7 or 9 pin protocols for truck chassis.
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Old 07-13-2019, 02:43 PM   #7
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Thanks. Just drove 2hrs and nothing, heading back today too
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