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 Post subject: Limp Mode, p0039 dash dtc but scanner says p0093
PostPosted: Sat Aug 13, 2016 10:33 pm 
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Joined: Sun Mar 06, 2016 5:43 pm
Posts: 4
P0093
Fuel System Leak Detected - Large Leak
P0039
Turbo/Super Charger Bypass Valve Control Circuit Range/Performance

Down to one DTC and fighting limp mode. When I turn key on/off 4x I get the P0039 code but when I read the scanner it reports a P0093 code.

The limp mode is frustrating and happens all the time, I've tried several tunes and back to stock. I've eliminated a few codes with replacing my chipped ceramic 7v glow plugs for a set of metal tipped.
Turbo hoses changed.
New chrysler fuel filter/heater replaced.
Fuel pressure sensor didn't make a difference. MAP sensor too.

I'm biting the bullet and taking it to the dealer Wednesday unless your expertise can help me try something new. I've got an inline fuel pump but don't think the low pressure side is my problem, but I'm a newb. BTW, I completed Sam's newb thread awhile back. Great forum, appreciate the knowledge/expertise. :JEEPIN:


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 Post subject: Re: Limp Mode, p0039 dash dtc but scanner says p0093
PostPosted: Sun Aug 14, 2016 8:45 am 
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Joined: Sun Mar 28, 2010 9:15 am
Posts: 5431
Location: Tallahassee, Florida
Key trick commonly reverses last 2 digits. Take dry paper towel and check for fuel leak(s) on all lines from the tank side of the filter head to all injector return lines plus with flashlight inspect injector bases for fuel leak indicated by pooled fuel or wet crud

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Sold to LOST member my 05 Ltd, GDE Stg II turbo + TCM tune, SunCoast TC w. Transgo kit, Steiger window regulators, Samcos, Fumoto valve, 2nd gen filter head with Lub. Spec. bleeder, Hayden clutch & 11 blade fan, inverted spare, P-1 battery, BF Goodrich Long Trail TAs, Etecno1 glow plugs, timing belt at 50K miles/8 yrs


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 Post subject: Re: Limp Mode, p0039 dash dtc but scanner says p0093
PostPosted: Sun Aug 14, 2016 12:26 pm 
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Joined: Sun Mar 06, 2016 5:43 pm
Posts: 4
Thank you, PapaIndigo-will do and post back results.

I'll throw the inline pump on too, I had misread the scanner and was focusing on the high pressure side.
I ran the scanner on live mode several times recording the data and current Freezeframe data. Very high readings well over 100,000 kPa, when converted to fpsi, are not as scary. I saw 140,800 kPa but now understand it is nearing the 23,000 fpsi limits. I replaced the fuel rail pressure sensor unnecessarily. :banghead:

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