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View Full Version : Citeoen C3 1.1L IAW 48P2.72 rev up problem



PSAcars
20th December, 2020, 08:51 AM
Hello to all. I have a citroen C3 ( my mum ), with 1.1l petrol engine. When I start car it starts from firs turn, hold idel ok, but when I try to rev up is it lighting the check engine light. Errors inside are :

P0201 , P0202 , P0203 , P0204 , P0265 , P0271.

First four are injectors cc to + , other 0265 and 0271 are amount of fuel injected in to the system is very big. Diag is made with Diagbox.

So far I have changed:
injectors - no difference
ignition coil - no differemce
temp sensor - no difference
map - no sifference
took voltage measurement at injectors 11.5v, added thicker wire from battery to injectors and coil ( assume BSM power relay feiler ) - did no help.
O2 sensors are working good

Here I was reading of flash problems of this type of ecu, can some one share good flash file for 29f400. I will make ti virgin ( 4000 to 7FFF all put to ff ) and code it back with diagbox with pin from BSI or original dump from ecu.

If any of you had problems like this with this type of ecu please give your oppinion.

pawl
20th December, 2020, 02:26 PM
hello friend, I had a problem, the driver replacement helped, actually a few everyone had a problem
sorry for bad english

PSAcars
20th December, 2020, 02:43 PM
Hello to all. Pawl you mean the mar9109pd injector driver chip????

pawl
20th December, 2020, 08:04 PM
I replaced the entire driver, the damage was in the motherboard

PSAcars
23rd December, 2020, 06:41 PM
Hello to all. Changing injector driver ( mar9109 ) did not help with present problem. Can some one share good dump of 29f400, to replace mine and test further.

PSAcars
26th December, 2020, 07:03 PM
Hello to all. Changing the flash 29f400 did not help with current problem, adopter virgin ecu, pin code and ..... but rev up problem is here to stay. If I find other ecu ( hardware ) I will try again. This is for now.

afonso rico
30th December, 2020, 11:36 PM
hello
see the masses and see the large plug-in which is in front of the engine under the stringer


Hello to all. Changing the flash 29f400 did not help with current problem, adopter virgin ecu, pin code and ..... but rev up problem is here to stay. If I find other ecu ( hardware ) I will try again. This is for now.

atomiczen
31st December, 2020, 02:17 AM
check engine compression. This ecu take P020x errors not only for wrong inj impedance, but in general for bad combustion cylinder.
I solved many times with new ign coil and new spark plug.