W211 injector wiring harness

[robocab]

Hi all I've owned my 2008 2.1 e220 auto for 5 weeks now & in random times it's went into limp mode, put the engine check light on, ran rough on idle or rough just plodding around. These happened some together, some not & at total random times. The garage are getting it sorted under warranty but they've put it down to either the wires that go to the injectors or the ecu, on code readers it says "injector 3 & 4 short circuit". At the minute they've replaced the wiring to the injectors & asked me to put some miles on the clock & see how it goes before mucking about with the ecu if it doesn't sort it ....have you guys had the same sort of bother either replacing wiring or ecu please??????

 

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There is a sensor bolted to the high pressure pump (2xt20 or t25 torx bolts) I have had that cause similar issues inc cutting out, if there is a dodgy wire/plug to an injector it would cut ut or not start.

 

[robocab]

Thanks I'll see what happens hopefully get sorted properly