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Old 06-29-2022, 05:29 PM   #1
Senior Member
Join Date: Oct 2011
Location: Myrtle Beach, SC
Posts: 158
Check engine light

Driving my 2013 Allegro 34Qfa RED on the hwy…suddenly notice check engine light, as well as check engine notice on dash display and another check engine light with an exclamation point….
All gauges normal, engine sounds and feels normal, no change in speed
After a few minutes (looking for place to pull over), the dash display went away, as did the CE light with the exclamation point
Other CE light still on
Everything continued as normal
Waiting for access to an OBD reader
Any thoughts?
2013 Tiffin Allegro Open Road RED 34QFA
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Old 06-29-2022, 07:26 PM   #2
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Join Date: May 2016
Posts: 94
On my coach there are two buttons under the speedometer. Pressing both at the same time will bring up a menu. One of the menu options will give you the active codes.
Brian Rodgers
2018 Tiffin Allegro Bus 45OPP
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Old 06-30-2022, 11:15 AM   #3
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Location: Southern NM
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As mentioned , you should be able to pull the codes. If not, stop at a Cummins authorized dealer and have them check for codes. An OBD will not read diesel codes. There should be a port under the dash left of the steering column and one at the rear at the engine.
2018 Allegro Bus 37AP
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check engine light, engine, light

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