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by MalteA
21 Aug 2023, 02:04
Forum: 850, S70, V70, C70, V70-XC 1992-2000
Topic: 1999 V70 121 kW Denso: front O2 sensor stuck at 0,5 V reading
Replies: 8
Views: 1763

Re: 1999 V70 121 kW Denso: front O2 sensor stuck at 0,5 V reading


There is VIN on CDM (dashboard) but it is not even connected to IMMO3 module so i don't understand any claims how it would work.


Those guys seem to offer a service I had in mind (swapping ECUs by cloning them): https://xemodex.com/us/available-services-for-volvo-engine-control-module-denso-p2 ...
by MalteA
21 Aug 2023, 02:02
Forum: 850, S70, V70, C70, V70-XC 1992-2000
Topic: 1999 V70 121 kW Denso: front O2 sensor stuck at 0,5 V reading
Replies: 8
Views: 1763

Re: 1999 V70 121 kW Denso: front O2 sensor stuck at 0,5 V reading

Darkfleet (author of the mentioned thread) was so kind to describe the solution to his Problem in 2017: it was indeed a bad knock sensor and he changed it (without removing the manifold, heureka). From what he told me, it seems like the ECU freezes the oxygen sensor input (or ignores it), if the ...
by MalteA
30 Jul 2023, 02:15
Forum: 850, S70, V70, C70, V70-XC 1992-2000
Topic: 1999 V70 121 kW Denso: front O2 sensor stuck at 0,5 V reading
Replies: 8
Views: 1763

Re: 1999 V70 121 kW Denso: front O2 sensor stuck at 0,5 V reading

Since this is the ‘99 denso model the electronic immobilizer is part of the ECU. I didn’t fully understand it, but it is somehow tied to each individual control module/VIN. Which means you can’t just swap it in and out between different VIN.
by MalteA
29 Jul 2023, 23:40
Forum: 850, S70, V70, C70, V70-XC 1992-2000
Topic: 1999 V70 121 kW Denso: front O2 sensor stuck at 0,5 V reading
Replies: 8
Views: 1763

Re: 1999 V70 121 kW Denso: front O2 sensor stuck at 0,5 V reading

Hi hausmeister,

I could get a ECU for 120€, but I would need to clone mine to the used one. And I have no clue how to do it. I believe there are people who could do it for around 120€. Not exactly the cheap version. Anyway, you are right and this would be the next logical step. My hope was that ...
by MalteA
29 Jul 2023, 06:47
Forum: 850, S70, V70, C70, V70-XC 1992-2000
Topic: 1999 V70 121 kW Denso: front O2 sensor stuck at 0,5 V reading
Replies: 8
Views: 1763

1999 V70 121 kW Denso: front O2 sensor stuck at 0,5 V reading

Hey guys,

I am looking for a solution for a problem with the front O2 sensor readings. Reading through ECU (with Vida) is stuck at 0,5 V which equals lambda 1 or perfect air fuel ratio. Obviously this is not the expected behavior, since the signal should oscillate. Additionally I get the knock ...