Opel Astra H 1.7 CDTI Z17DTJ 1602-4B error

[Panathaole]

Hi

I have 1602-4b error in an Opel Astra H with 1.7 CDTI Z17DTJ engine,

According op com and Delhi vci it need to learn
Small injection quantity, I try with both tools to learn to ecu but with out success...

(All the injectors had replaced with others used from a working car)

How can I make small injection quantity learn?
(Maybe I have a faulty injector, and that is the reason to I can't make the learning to the ecu?)

The only fault code in ecu is the 1602-4b....

[rafal]

probably injectors fail...................

[Panathaole]

Update....
Now when I push the brake pedal, the rpm drops to 500~600....

Ecu maybe?

[adxinnixda]

Hi, must reanimate this old thread, hast somebody a solution for this? I trying it with launch and Delphi all conditions are fulfilled but haven't success.