Mercedes A170 EDC15C0

[erikfrog]

Hi, I have problem with A-classe 66kw CDI. I have fault 1622 - ELAB -Implausible Signal, Sometimes can be erased and car works OK, when fault present car goes in limp mode, max 3000rpm. ELAB is not in fuel pump only in fuel hoses. Wiring 100% OK, Elab 100%.
All indication ECU faulty.
Any idea to repair?

[mercis]

high pressure pump
valve for low pressure blockt

[erikfrog]

There is no electric in HP pump. Two months ago replaced egine with injectors and HP pump.
Fault come without startng motor just turn on ignition. This engine is version without ELAB, but ECU need ELAB to be connected. So ELAB is connected to ECU and I have put it into ECU-relay Box. Two months car drive perfect.

[mercis]

i mean no elab,

[erikfrog]

i mean no elab,

I can check it, but why this fault come even when I don?t start engine?

[DJAMY]

change ECU , this case happened many ,
swap with new or use with same softwear and ref

[erikfrog]

I?m going to search another ecu and give info.