Check engine light with codes P2105 U0300

WENDY MORSE-LEIGHTON

MEMBER
2008 FORD E-SERIES VAN
5.4L
V8
RWD
AUTOMATIC
123,567 MILES

Engine stops running at idle and driving. I replaced throttle body and PCM checked wiring to throttle body and accelerator pedal position sensor found no problems.

Monday, November 7th, 2016 AT 4:14 PM

5 Replies

AL514

MECHANIC
4,805 POSTS

Your U0300 is "Internal Control Module software incompatibility".

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Monday, November 7th, 2016 AT 4:41 PM

WENDY MORSE-LEIGHTON

MEMBER
3 POSTS

It is an e350.

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Tuesday, November 8th, 2016 AT 3:30 PM

WENDY MORSE-LEIGHTON

MEMBER
3 POSTS

Does the PCM need to be reprogram by the dealer?

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Tuesday, November 8th, 2016 AT 3:38 PM

AL514

MECHANIC
4,805 POSTS

It may need to be, but lets put this on hold until tomorrow. I will dig into this more and give you my best idea of where to go next. I do not want to guess, I would much rather give you the best path to take next so you are not wasting money and time if that is okay with you. Deal? We will figure this out.

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Tuesday, November 8th, 2016 AT 4:30 PM

AL514

MECHANIC
4,805 POSTS

Ok so what I found is that the U0300 code is software level related and will interfere with the electronic throttle by wire system that you have, which is why you are getting the P2105 throttlebody code. Considering you have replaced the ECM I think is safe to say yes the ECM needs to reprogrammed with the correct software level so there is proper communication to the throttlebody motor from the pedal position sensor and the ECM.