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Old 07-10-2014, 11:16 AM   #1
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Tiffin Owners Club
Join Date: Jul 2013
Location: Ancaster, On, Canada
Posts: 9
SOS Check Engine Light 2012 Allegro Bus

Hey Everyone

My husband and I are about 4 hours into a 9 hour trip to Rhode Island (from Toronto area). Suddenly our check engine light has come on and every 10 minutes or so there is a beeping. We pulled over and turned it all off for about 20 minutes…called Tiffin…had to leave a message and so far no one has gotten back to us.

We pulled over checked the oil, water level…all seems to be ok. DEF is about 1/4 full. This is our 3rd big trip in the rig since we bought it last summer (it has over wintered in a heated RV garage at home). We took it out for 2 shorter trips earlier this spring with no issues.

Any suggestions?

Thanks in advance

Susan, John & the dogs

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Old 07-10-2014, 11:34 AM   #2
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I suggest you stop at a place that can scan for error codes. It could be a loose connection, water in fuel, overheat, etc. Does the engine 'derate' or limit itself? It's too expensive to ignore, find out what's going on and be sure.


Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
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Old 07-10-2014, 12:03 PM   #3
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Workhorse Chassis Owner
Join Date: Oct 2009
Location: Warner Robins, GA
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Instead of calling Tiffin I would call the engine mfr.

Jon & Sue Francis (Retired U.S.A.F.)
Lil Girl-Rescued, Abby Rescued, Peaches Rescued
06 Allegro 35TSA Workhorse Chassis
2013 Chevy Spark Dinghy
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Old 07-10-2014, 12:46 PM   #4
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How many miles on unit. Has fuel filter been changed? Dave
Tiffin 32CA 2012
2007 Jeep Liberty
Mitzi-chihuahua+Ruby and Raisin- baby shih tzu sisters
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Old 07-10-2014, 02:37 PM   #5
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Well we have stopped…twice now at different diesel repair places…code unknown…it is suggested we keep driving until we can get it into a Cummins shop. sigh… 12500 Km on the unit…so about 7500 miles. Thanks for you input everyone!
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Old 07-10-2014, 02:42 PM   #6
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Call Don't Boyd at Tiffin. 256-356-0261 ext 3290.
Mel (Melanie) and Harry
2009 Tiffin Phaeton 40QTH
2014 Jeep Wrangler Sport
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Old 07-10-2014, 08:53 PM   #7
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While you are waiting you might pick up a couple of gallons of DEF and add that to the tank. Quarter tank might be getting on the low side, I have no idea how those little squares are calibrated. Just a thought, cheap fix if that's the problem.

Paul Rocking down the road in our '12 Phaeton 36QSH, (in service May 2012 ) We tow an '11 4 dr Jeep Wrangler Unlimited Rubicon - Read my blog at goldberg-online.net AKA RVM86
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