ds3 ecu issues

[thomas1978]

hi all im hoping for advice and solutions to rectify the problems with ecu faults
the problem ive got is when starting the car in the morning the engine shakes like hell and then settles then hesitates when driving then i get the management light come on and car runs fine strange yes so i scan the car delete the codes and runs like crap again.
engine codes are
u304a oil gauge fault probably sensor but dashboard says oil ok
u2000 intermittent fault on intersystem CAN principal wake up the ecu plausible or absent
p1b77 intermittent network voltage maintaining device internal fault
p1b72 intermittent network voltage maintaining device power earth fault open circuit
b1004 intermittent network voltage maintaining device internal fault
p1b71 intermittent network network voltage maintaining device triggering line fault short circuit to earth or open circuit
uif2e intermittent absence of communication with the engine management ecu
ive replaced all the previous codes sensor related im running out of patients
ds3 1.2 thp ive enquired with a few ecu people and they all came back with we dont have anything that can read this model of ecu thats in the car
my other thought is do i just replace all the necessary ecus and ignition lock clocks bsi and pray that solves it

[wheeler]

Would maybe help if you could put the fault descriptors in with the P codes most people dont know these off by heart & saves someone else having to look up 7 different fault codes.

[thomas1978]

updated

[thomas1978]

ive disconnected the battery but not scanned yet so codes may have gone but still the running issue these codes popped up before and didnt effect the way the car ran which was still lumpy when cold engine bouncing all over the place and hesitant when you accelerate if that makes sense

[RichardW]

None of those should cause running issues. What codes do you get immediately it is running rough? You need to look in life data, misfires, fuel trims, cam timing etc.

[thomas1978]

hi richard w ill check the live data id have to run the car again to be able to read the code that pops up as cant remember what it was as that many popped up sensor related and replaced the parts related to the codes but still runs crap once ive got the codes again i report back thanks

[thomas1978]

from the beginning full service replaced also new battery ignition coils fuel pressure sensor inlet manifold seal fuel pressure sensor map sensor which eliminated most the issues that flagged up so just the rough running at first start up runs rough and hesitates when accelerating and you release the accelerater goes idle then runs rough again tried replacing the acc pedal still same
ill get the live data today and try to post both a video and live data if i can here thanks

[thomas1978]

richard w do you have whatsapp then i can send video info of the live data from the car

[RichardW]

Upload it to YouTube and then post a link.

[thomas1978]

update replaced the ecu fuse box bsi and ignition all working now engine isnt bouncing around no more apart from keep getting
p0087 p0171 again ive replaced the relevant things and still popping these codes up but still runs fine apart from management light keeps coming on could be down to faulty parts of course running out of ideas now.