Lambda sensor resistance

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oolong

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When a fault with a lambda sensor occurs does VCDS give the actual resistance of the sensor heater?

I stalled the Skoda Fabia 3 and upon depressing the clutch to restart all gears gave me reverse? By switching-off for a minute or so, all good but the engine light came on?

I checked with VCDS:

Code:
Friday,01,December,2017,17:54:18:27427
VCDS Version: Release 17.8.0 (x64) Running on Windows 7 x64
www.Ross-Tech.com

                Address 01: Engine       Labels: 04E-907-309-V1.clb
Control Module Part Number: 04E 906 027 BB    HW: 04E 907 309 AF
  Component and/or Version: R4 1.2l TFS   H22 9016
           Software Coding: 01110032232415080000
            Work Shop Code: WSC 73430 031 00063
              ASAM Dataset: EV_ECM12TFS01104E906027BB 001008 (SK26)
                       ROD: EV_ECM12TFS01104E906027BB.rod
                      VCID: 6594BE96D5E7741FC8C-8030
1 Fault Found:

15356 - Oxygen (Lambda) Sensor Signal B1 S2 
          P2270 00 [237] - too Lean
          MIL ON - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 14461 km
                    Date: 2017.11.24
                    Time: 13:56:42

                    Engine speed: 2383.50 /min
                    Normed load value: 42.0 %
                    Vehicle speed: 98 km/h
                    Coolant temperature: 93 ∞C
                    Intake air temperature: 35 ∞C
                    Ambient air pressure: 990 mbar
                    Voltage terminal 30: 14.418 V
                    Unlearning counter according OBD: 40
                    Oxygen sensor 2 bank 1 internal resistance limit value: 700 Ohm (2 TO 14 OHMS?)
                    Mass flow through throttle valve: 60.5 kg/h =16.8g/s=OK (1 and 25 g/s)

Readiness: 0000 0000 CANNOT BE SET DUE TO LAMBDA SENSOR B1 S2 (AFTER CAT CONV)?

And the 700 ohms is far too high for a heater. Thinking the ECU had gone to 'Fairyland' I reset DTC but the fault came back some 100km later so the B1 S2 must be going/gone? Interesting the Readiness being all zeroes since the Fabia was serviced in October?
 
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Jack@European_Parts

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Reset DTC memory and repost new complete auto-scan unedited.
Lean is "lean" not a resistance value issue.

I'd go look for exhaust or intake leak or lack of needed fuel by observing trims & isolating conditions.

JPPSG
 
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Uwe

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When a fault with a lambda sensor occurs does VCDS give the actual resistance of the sensor heater?
This is not a question of what VCDS gives, but rather what the ECU gives. ;)

Heater resistance is available in the measuring values for this ECU. Just type 'heater' into the search/filter box and you'll find it.

What I think you're doing here is conflating the "internal resistance" of the sensor itself with "heater resistance".

-Uwe-
 
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oolong

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I can just imagine your avatar smile in composing the first sentence! I didn't conflate the 'Rs,' just jumped at a silly solution without thinking properly! Thanks, Uwe.
 
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oolong

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Thanks JPPSG, I think it was my 'newbie' effect. I never apparently cleared DTC memory correctly. By inspection the faults I got were a-priori to current date. It appears with a fault say in Engine, one clears by selecting 'Engine' then also clears from the Autoscan page. I did this and trialled a run for 10 minutes and no faults. Will see what happens on a run into town and back. (Seasons Greetings, to all at Ross-Tech.)
 
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