Fuel Rail Pressure - Friend in Need - P00C6

[WarrenBoostit]

A buddy of mine who also has a SHO is in a bit of a pickle. I can get more of the specifics from him, but essentially, he's far up north ice fishing in MN, and just got hit with a P00C6, Fuel Pressure Too Low, and a Cylinder 3 misfire, straight to limp mode. I believe he has a 2013 non-pp, non tuned SHO, with roughly 140k miles. He's in a bit of a tough spot as he doesn't have a ton of amenities near him to make the parts cannon process easy. nor a fast internet connection. He had one courier heading up today (not me, as my SHO is back in the transmission shop ), so naturally given his year I told him to replace the Fuel Pump Driver Module behind his rear seats.
Unfortunately, that didn't work. I'm looking for further advice on how to help him diagnose, or maybe at least limp the car closer home. LTFT floating around 10-12.5% at idle. So far my advice has been:

- See if the HPFP is making weird noises when turning the key and priming, then it's likely to be the HPFP

- Check if the exhausts are excessively smokey and fuel smelling, as I think that would indicate a stuck open injector.

- Being as he only has a bosch obd2 reader, I'm not sure if diagnostics would be available on actual vs commanded pressures, but see if there's any funniness there.

- maybe fuel rail pressure sensor? maybe?

- hail mary some injector cleaner?

Would love to know any other troubleshooting or related advice you guys may have, he's had a shockingly reliable stock 2013 SHO for a while now, and this is his first dance with the wallet demon we all know, and it seems it's happening in the worst of places. I have a feeling a 3 hour tow would be extremely expensive and I'd like to save him that if possible.

 

[luigisho]

All of your suggestions are valid. I'd lean toward injector but probably want to verify fuel pressure. Sensor is possible. Cleaner is a hail mary but affordable option. If you are really frugal you can swap injectors and see if it changes cylinders. A good diagnostic with Ford scan tool (not reader) might be worth paying for to keep the cost of throwing parts at it to a minimum.

 

[Texas Marauder]

If you are really frugal you can swap injectors and see if it changes cylinders.

It's not practical to swap injectors on an Ecoboost engine. Completely different from the Yamaha V6 and V8.

You're wandering in the dark without a scan tool that can read PIDs.

 

[kryptto]

Typical issues could be the module, u replaced, hpfp or a rail sensor, but to get accurate understanding your friend needs to get a bluetooth odb connector and an app

 

[WarrenBoostit]

Interesting point to note, the Cylinder 3 misfire came before the rail pressure CEL. He's going to try non intake manifold removal troubleshooting first, moving and replacing that coil on cyl 3, with the theory that maybe the ECU tried to compensate the misfire with higher fuel trim, resulting in low rail fuel pressure on stock parts. To me this seems plausible (but correct me if I'm wrong), and also definitely the easiest thing to try first. Additionally, I'm not 100% sure what the quality of his current obd reader is (it is capable of reading things like LTFT), but I'll let him know he should look down the avenue of live data monitoring for this. If this doesn't work he'll likely be diving into injector and fuel pressure sensor world at a later date.

 

[WarrenBoostit]

Welp, ended up being his injectors. Since he might as well replace all at once, he's wondering about any thoughts on the bosch over oem you guys might have

https://www.carparts.com/fuel-injector/bosch/set-bs62842-6

 

[kryptto]

Welp, ended up being his injectors. Since he might as well replace all at once, he's wondering about any thoughts on the bosch over oem you guys might have

https://www.carparts.com/fuel-injector/bosch/set-bs62842-6

Bosch and OEM are the same at the time of manufacturing. If OEM are cheaper ask who made them, if Bosch buy them.