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Old 01-05-2014, 06:30 PM   #1
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Check engine light on 99 36fds

Is their a way I can retrieve the trouble codes without a scan tool?
Coach starts and runs fine but light just came on

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Old 01-05-2014, 06:38 PM   #2
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Could be from something stupid that happened when you started it. Disconnect battery to get rid of light and if it comes back on, get a reader to get codes. I had my light come on on the way home 2 years ago and all was well on my instruments. Drove it all the way home, did the battery thing and light has not come on since. I have gone south again since. Also happened the other day with my Ford pickup, disconnected, light went out and has not come on again.

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2000 Winnebago 35U, Ford F53/6.8l V10
F150 Ford and Vintage Aspencade.
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Old 01-05-2014, 06:41 PM   #3
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Originally Posted by Justinmartin View Post
Is their a way I can retrieve the trouble codes without a scan tool?
Coach starts and runs fine but light just came on
check with local auto part store, they sometime scan it for free. Maybe a local RVer might have a scan tool.
1999 Bounder 32H Ford V10, 2012 Ford Focus, Pretty DW, 1 cat. Retired USAF
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Old 01-06-2014, 09:39 AM   #4
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It's not an obd2 connector
I'd like to see what codes in it instead of just clearing it
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Old 01-06-2014, 09:58 AM   #5
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Its a Cummins--their engine, their code reader. Common but useless codes include loose fuel caps [maybe????] and "high" manifold temp based on wax valve not opening soon enough if you start driving in cool temps before engine has gotten above 150 degrees or so. Could also be fuel flow issues. Beyond these, the codes/causes are endless. Dont know of any DIY ways to decode these "warnings" in the earlier engines [think the later Activa gauges have a hidden decoder mode???]
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Old 01-06-2014, 11:13 AM   #6
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As Old Scout said, the only way you will find out what the codes are is to go to a Cummins shop and get them to scan it. I assume it stores old codes so even if your light goes off they may be able to tell you what the problem was. I am assuming you have the ISC engine.

John and Mary Knight
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2015 Cadillac SRX Luxury AWD
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