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dieselmartin Profi-Schrauber


Joined: 03/13/2003 Posts: 10121 Karma: +29 / -0 Location: in der Werkstatt 2007 Volkswagen Passat Premium Support
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02-03-2011, 21:31 Subject: BLS & Lambda Log: Explained |
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Hi.
Does the BLS measure lambda in the exhaust gas, like the BMR?
Last night, I performed a "Reg-Lambda-Gear Spread" test, and I've now noticed that the Lambda values appear to be based on a table rather than actual measurements.
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| Reg-Lambda-Getriebespreizungs-Logfahrt |
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Transparency, Teamwork
... there was another T.
I don't know what the f*ck it was.
Translated on 12-09-2026, 0:58.
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PD90 Blaumann

Joined: 06/14/2008 Posts: 54 Karma: +10 / -0
Registered VCDS User
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04-03-2011, 21:03 Subject: BLS & Lambda Log: Explained |
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Hello,
Since the oxygen sensor primarily serves as an input for the fuel mean value adaptation (FMA).
"is used, and precisely this FMA is deactivated during the active RGN."
The lambda signal is observed during the RGN phase, as well as after a (cold) start (=> dew point model).
only provide house numbers (it will not be learned).
If you have been logging for a longer period, you will also experience a jump in the value when transitioning from RGN to NRM.
Lambda signals, previously appearing "frozen," now appear "alive."
FMA can also be actively applied/deactivated via the EOM/EGT mask, just like other functions.
as well as the analysis of the lambda sensor data.
=> I've never seen them make corrections during the RGN (Regional Growth Network) before.
Hi, PD90.
Translated on 12-09-2026, 1:00.
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dieselmartin Profi-Schrauber


Joined: 03/13/2003 Posts: 10121 Karma: +29 / -0 Location: in der Werkstatt 2007 Volkswagen Passat Premium Support
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05-03-2011, 10:20 Subject: BLS & Lambda Log: Explained |
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Funny.
The registration was complete, and the tractor was warm.
Otherwise, I wouldn't have turned it up so high.
Transparency, Teamwork
... there was another T.
I don't know what the f*ck it was.
Translated on 12-09-2026, 1:01.
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PD90 Blaumann

Joined: 06/14/2008 Posts: 54 Karma: +10 / -0
Registered VCDS User
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05-03-2011, 21:05 Subject: BLS & Lambda Log: Explained |
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To be honest, I'm not sure if your BLS even has a lambda sensor installed...
My BXF in the G5 (Euro4 without DPF) definitely doesn't have one!
Otherwise, the installation location is: after the turbine / before the Oxikat (as you already know!).
If you happen to have one, I'm also at a loss as to why the signal...
it looks like a staircase.
Hi, PD90.
Translated on 12-09-2026, 1:02.
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