Quick question. As I noted in my other thread I installed the weeks stage 1 & 2 kit on the Jeep. Wondering what codes I should be getting now. I have -

P1140 Vacuum reservoir circuit (short/ground/open)
P0403 EGR circuit (excessive volt/open circuit)
P0101 MAF sensor signal (negative/positive deviation)


I was fully expecting the P0403 and possibly the P0101. But I was not expecting the P1140. Should I be seeing these codes?

Thanks.

P1140 is actually bad/missing FCV on this vehicle. So that makes sense.

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05CRD: GDE Hot ECU & TCM tunes, Provent, Cat filter, Facet lift pump, TransGo kit, Florida TC, Samcos, stainless brake lines, HDS thermostat, Renegade light bar,
RL super sliders, Bilstein adjustables, Al's Gen 4.5 Arms, 235/85-16 Duratracs, DTT rear, Elocker front, EVIC+TPMS, Turbo timer, McNally pillar gauges, Weeks Stage II kit.

Is your MAF still unplugged?

You will need a tune to get rid of the other two codes. Either GDE or one of the DIY tunes.

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U.S. Army Retired

No. MAF is plugged in.

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I know i need a tune to eliminate the codes. Just want to make sure i dont have any codes that shouldnt be there

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This is correct.


Looks normal for a non-tuned ECU.

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