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Old 10-11-2012, 08:15 AM   #1
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Check engine light

Have a new 2013 Phaeton. When I took delivery the check engine light was on. Apparently from the factory? I have had it into the dealer for service and they have not yet found out why it is on. It appears to be intermittent mostly on rather than off. Anyone have any ideas on what to check out or has anyone experienced this?
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Old 10-11-2012, 09:42 AM   #2
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Since the dealer is a RV "specialist" and not a truck service you need to get it to the service dept for the chassis you have. May be as simple as a wheel sensor out of adjustment.Hope you get it resolved
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Old 10-11-2012, 10:16 AM   #3
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A check engine light should set a code. If the dealer can't read it, you need to find another dealer. Autozone or O'Reillys would be able to find it.



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Old 10-11-2012, 12:44 PM   #4
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As Dunner said, it should be setting an engine code error. Not sure if Autozone will be able to read truck codes (need J1708 / J1939 scanner which they might not have (they might only have OBDII readers)) but the dealer should be (unless they don't usual deal with DPs in which case you need to find yourself a better service place).
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Old 10-11-2012, 05:07 PM   #5
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We have a 2011 Phaeton with a Powerglide chassis. With the PG you can read the codes to determine the problem. There are 2 buttons between the tachometer and speedometer. By pushing them together you will bring up menu options and should be able to find the code. The challenge is there are many different codes. We called Tiffin and spoke with Nathan in the PG shop. He was extremely helpful and told us what the codes meant. The Tiffin literature does not list all the codes.
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Old 10-11-2012, 09:12 PM   #6
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If they couldn't read any codes, perhaps the light is being activated by the test feature in the computer.

To check this out, turn on the ignition switch but don't start.

Back out of the pre trip checklist.

Hold the selector button to the right until a menu appears with the following 3 choices. Setup, Maintenance, Diagnostics.

Select Diagnostics. That will give you 3 choices. Check gauges, check icons, and check inputs.

Select Check icons.

They are arranged by rows. On my coach the only one active on the top row is the headlamp icon. All of the other icons are on the middle or bottom row and can be turned on and off for testing. Normally they should be off, but if any are on, the icon will display. That could be your problem.

Hope this solves your problem, but if it didn't, you probably discovered something that will be helpful in the future.

Good luck.
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Old 10-11-2012, 10:38 PM   #7
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Thanks for the suggestions I will try them out in the morning and if I don't get the light to go away or at least figure out what it is. I will be seeing the cummins dealer locally.
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Old 10-11-2012, 10:40 PM   #8
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BTW the local repair shop that the dealer had sent it to said there were no codes. Time and patience will prevail.
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Old 10-18-2012, 12:13 PM   #9
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Any luck?

I posted the in a different thread ( 2012 Check Engine light on ) about the same issue with another brand new Tiffin Motorhome (Allegro). Not even 2000 miles, and the MH dealer cannot help. I bringing it to Ford on Monday, but even there, they told me that they are not sure what they'll get when reading the codes....

For this amount of money, we expect the MH to be better quality, mainly when it is brand new .....
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Old 10-18-2012, 08:21 PM   #10
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I will be taking it to the cummins dealer this coming week. I also would like to know at what temperature my unit is running at because along with the check engine light my gauge on the dash is telling me I am running it in the cold range, which from experience tells me is not good as diesels like to run warmer as opposed to cold. It is just a cold hot gauge and does not indicate actual temp so I am not sure what it is actually running at. Who knows maybe this is the reason for the check engine light? However I also expect better from a new unit that has the reputation that Tiffin has and for the amount I paid I reckon I have the right to expect more.
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Old 10-18-2012, 08:29 PM   #11
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Check the coolant level. If it looks like it 'should' be good add some coolant and see if that clears the light. If coolant is low it won't show a code. Had that problem on the 09 Peterbilt I drive for work.
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Old 10-28-2012, 07:06 AM   #12
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Hopefully the final diagnostic

The Ford Dealer replaced the catalytic sensor.
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Old 11-10-2012, 03:00 PM   #13
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I had same problem on test drive. Amber check engine light then 'red' engine light with message: Shut down engine now. Dealer took it to Cummins who found that the temp. sensor in radiator was bad but Cummins doesn't do warrrenty work and they recommended that dealer take it to chassis people. Cummins told me it only takes about 15-20 minutes to fix and they have had a lot of problems with this sensor. Good Luck!
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Old 11-11-2012, 07:27 AM   #14
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Smile

The problem has been rectified. Cummins found water in the fuel filter. They changed it out and all appears to be ok. Thanks for the info I will keep an eye out for the problem you encountered.
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