2019 F450 6.7L XL Chassis/Cab 150k, always regularly serviced.

When Towing our 20K Toyhauler the truck will throw P2263 code and then goes in to limp mode. After finding a place to pull off and shut down it will restart and clear limp mode. The engine light will stay lite for around 3 days then clear. It can only be replicated while towing under certain circumstances.

P2263 - Turbocharger/Supercharger Boost System Performance,

It happens when; towing uphill or against a strong headwind (Columbia Gorge), the transmission will be in 3rd gear (usually, but has happened in 2nd gear), RPMs are just above 2500, cooling fan starts to kick in and I have just a few seconds to get the RPMs under 2500 before the code and limp mode ding. If I am able to reduce RPMs soon enough there is no code. Often I release to much pressure off the go pedal and dump all my speed.

I have tried cleaning the MAP sensor and finally replaced it once with a cheap one and then the OEM sensor. Have looked at buying a MAP sensor spacer but holding off until I am sure that the Turbo is not bad. Currently in the SW traveling far away from my regular mechanic and leery of finding some one to diagnose and next I am out 10K on a turbo replacement. My days of hard wrenching are long gone with arthritis. Any thoughts, ideas or suggestions would be greatly appreciated.

 

I wouldn't throw any more parts at it, need to get it in a shop to be properly diagnosed.
If you don't want to do that away from home, then baby it and put up with the issue until you get back home.

 

I had that code last year

called ford and they said over the phone needed a turbo and it would be a 3 month wait to bring it in. Phooey.

I had screen shots from idash of air flow related settings at different rpms and after reviewing….the exhuast back pressure numbers did not make any sense ….very erratic. So I replaced my ebp sensor and problem solved. In my case I had historical numbers to compare.

cleaning sensors is a feel good thing.. it’s really best to replace any questionable ones.

if you take it to the shop be prepared for smoking mirrors and a shell game.

 

[if you want air flow numbers to compare post 39 of this thread has some good ebp numbers at different rpms.

[url]https://www.ford-trucks.com/forums/1753114-p2263-reduced-power-turbocharger-supercharger-boost-system-performance.html

 

https://www.ford-trucks.com/forums/1753114-p2263-reduced-power-turbocharger-supercharger-boost-system-performance.html

 

PCM P2263:00 Turbocharger/Supercharger "A" Boost System Performance: No Sub Type Information - Sets when the PCM detects the indicated boost pressure is less than the calibrated value by greater than a calibrated threshold. If any EGR system Diagnostic Trouble Codes (DTCs) are present with this DTC , it may be an indication of a restricted exhaust pressure sensor or tube.

Possible Sources

MAP sensor concern
Exhaust pressure sensor concern
Turbocharger system performance
Turbocharger air leaks
Turbocharger actuator
Vacuum leaks
Turbocharger
Charge air cooler system leaks

 

Thanks and that was a great read.

 

It has only been the 2263 code.

 

Waiting for a call back from my mechanic. I'm thankful that it will still work, just have to baby the truck on the mountains.

 

My previous truck, 2006 6.0, threw a code pointing to possibly a turbo problem. The first time I got the code I was in the mountains so I cleared the code and moved on did not notice any change in performance. A few months later it appeared again I cleared it and was planning to look into it further. About a week later took another trip into the mountains and blew my turbo right off its pedestal, smoke everywhere truck coasted to a stop. Opened the hood and saw my turbo sitting sideways dangling from the exhaust, oil everywhere, the blades looked like a rock went through them. Had it towed home then replaced the turbo myself.

lesson learned don’t ignore that turbo code.

Good luck…

Mike

 

thanks for the advice, but I learned my lessons on a 6.0 back in the day. I just replaced the whole truck.

 

Ya I know what you mean about the 6.0 it could be a bit problematic at times

Mike