2011 Ford E350 - 6.8L Won't Run Monitors?

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mas152
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2011 Ford E350 - 6.8L Won't Run Monitors?

Post by mas152 »

2011 E-350 6.8L will not run Cat, EVAP, O2, & O2 heater monitors.

Customer has replaced all O2 sensors, all Cats, two reman Ford PCM's. Data appears OK, mode 6 indicatesO2 monitors $02/ $85, $02/$86, $06/$85, & $06/$86 are incomplete.

Any ideas?
Gib
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ricmorin
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Re: 2011 Ford E350 - 6.8L Won't Run Monitors?

Post by ricmorin »

First thing that comes to mind is the keep alive memory? Can you confirm the pcm has power at the KAM circuit all the time?
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mas152
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Re: 2011 Ford E350 - 6.8L Won't Run Monitors?

Post by mas152 »

I have checked all powers & grounds. Even if you drive it, then check the monitors before shutting off, the monitors have not cleared.
Gib
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ricmorin
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Re: 2011 Ford E350 - 6.8L Won't Run Monitors?

Post by ricmorin »

Make sure the engine is coming up fully to temp. Any aftermarket air cleaner or tuning done to it? I assume you are doing the drive cycle according to Ford?
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mas152
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Re: 2011 Ford E350 - 6.8L Won't Run Monitors?

Post by mas152 »

Completely stock van, I have tried driving it on the dyno, on the road, according to Ford, extended cruise, just driving, cold starts, hot restarts, every driving style & condition I could think of. Scan data all looks about what I would expect it to be under the conditions I'm driving at.
Gib
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steven kiser
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Re: 2011 Ford E350 - 6.8L Won't Run Monitors?

Post by steven kiser »

Is there an issue with the power source aka cig lighter? Also I believe there is a certain sequence a minor one but it needs to be fulfilled. I remember an issue we had with one of these and I believe we found the answer in the Ox heater circuit. I'll keep looking. My office is all ripped apart for a remodeling so my little book of answers isn't quite handy but I will look for it. I know we had an issue like this and was resolved so it should be in my book.
never argue with a fool, they'll drag you down to their level and beat you with experience
mas152
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Re: 2011 Ford E350 - 6.8L Won't Run Monitors?

Post by mas152 »

All new OEM O2 sensors
Gib
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