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Discussion Starter · #1 · (Edited)
Sort of a long story

Background - car has ~52,000 miles, mildly modded running Cobb OTS stage 2 tune. Been problem free.

Few weeks ago driving down the road I get "engine fault service now" on center of gauge cluster. P2610 code also. Car won't start and every light gauge cluster is lit up. Happened at a stop sign so push it to side of the road, scan and see code, get pissed, call the wife.... After a few minute I press start and start and back to normal. Go home de-tune it scan it again and shows same code as pending code.


Cannot immediately get to dealer, of course their working hours are the same as mine. About week later I get "starter fault message" and won't start. Get out check battery connections all good. Jump back in starts right up. Scan, no codes and P2610 is not showing anymore either. Driving it de-tuned sux too, even though I only run OTS it is a world of difference.

I do have the battery ground and the body grounds cleaned and tied together for well over a year now.

On the way to work I get the engine fault display again and the this time airbag light comes on and stays on. Go to work, about 2 hours before I can leave, get in start it up and light is gone and no obd codes. Take it to the dealer and given them the whole story. (Edit) forgot to add cruise control was gone too.

I was smart enough to run sync health report


They get the car in 2 days later and find multiple networking codes but no problems. I would think multiple network codes is a problem...

Anyone have any thoughts on this?

I suspect an electrical problem, ground or short issues but idea where to look. Car has had the wiring TSB ~2 years ago. Did not have the idle issue just had it done since they would...
 

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Discussion Starter · #3 ·
If you had wiring done or corrected, start form there, and go from that point.
It will take time, but check out the whole harness.
Yeah I get it but not really practical at this point, anyway not until warranty expires. Honestly I think I will trade before I trace the entire harness. Right now I only know the issue is related to ecu, airbag and starter.
 

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Discussion Starter · #4 · (Edited)
So little update.... Tech thinks it is related to the tune. Some how tune or oem got corrupted, says this in part because the p2610 shows timer has expired.
Reflashed oem program, will see what happens next. Gauge cluster now has the quad trip window, nice. Also has ST logo on start up.
 

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This might be a long shot, but is there anything plugged into your OBD port when this happens? I had some similarly weird things happen to mine a while back that turned out to be a bad AccessPort cable intermittently shorting the CAN wiring.
 

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This might be a long shot, but is there anything plugged into your OBD port when this happens? I had some similarly weird things happen to mine a while back that turned out to be a bad AccessPort cable intermittently shorting the CAN wiring.
I am a Ford tech, and have been dealing with things plugged into OBD shorting things quite often. Just had a FoST 2 weeks ago with a shorted Accessport cable causing issues.
 

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Discussion Starter · #7 · (Edited)
This might be a long shot, but is there anything plugged into your OBD port when this happens? I had some similarly weird things happen to mine a while back that turned out to be a bad AccessPort cable intermittently shorting the CAN wiring.
No nothing plugged into the obd port when it happened. I just flash the tune and stuff the AP3 in the dash, I know sort of lane but... Week in new flash and things seem okay, going to give it another week or 2 then I'll throw the tune back in and keep my fingers crossed.

Until this the car has been trouble free. The 2 or 3 times this happened it won't start until about the 3rd or 4th cycle of the ignition. Really bizarre and of course I am right at the end of warranty

Edit - to be on the safe side bought a new cable too and damn they are $$$ for what it is
 
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