Cod P0170, open loop fault

Aceeasi problema am avut-o si in toamna, atunci am inlocuit sonda lambda 1 si "am scapat" de probleme.
Acum mi s-a aprins iarasi becul check si cod eroare P0170 plus valoare 0 volti la lambda si 0 la short term. Dupa cateva accelerari sonda oscileaza 0-250v si shortul se duce la 19,5 fix. Long term ramane 3,1 sau 3,9 ca si inainte. Motorul tremura.
Simptomele sunt exact ca in toamna, la fel si valorile, deci alta sonda nu mai schimb, nu cred sa tina doar juma' de an, este bosch conform cu originala.
Ca si cod de eroare (p0170)am vazut ca e foarte comun la k series, forumul UK este plin.
Poze:
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Update: dupa ce am sters eroarea a doua oara, nu a mai aparut si masina a mers foarte bine, cand spun asta inseamna mai bine chiar decat inainte sa se aprinda becul (cine nu intelege am alt topic cu bujii, fise...). Sonda de oxigen merge iarasi pe valori normale. Nu mai are lag intre treptele de viteza si trage uniform. Trepidatiile abia daca se simt....Nu stiu cat va dura minunea dar cred ca am o problema de fire.
Am vazut pe youtube ca daca pui in scurt firul de semnal cu groundul lambda da zero volti fix ( ca si la mine). Mai sunt o sumedenie de posibilitati...

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