Author Topic: R1150GS // O2 Sensor fault  (Read 929 times)

h_c_82

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R1150GS // O2 Sensor fault
« on: July 29, 2018, 05:20:58 PM »
Hey everybody,

I have a fault with the O2 Sensor and am trying to close down whats wrong: The fault report is attached.

I logged a 20min ride or so today to see if I can see anything suspicious in the log file (also attached).

I think that the Sensor heating might be faulty. It looks to me as it takes very long to give a signal at all (nearly 10min and over 90° oil).
And then it looks like the lambda voltage is not very strong (not exceeding 700mV).

From other log files I have seen (Roger04RT on ADVRider...) the Lambda Sensor should kick in much earlier. Anybody any other ideas or am I on the right track. By the way the Sensor is brand new but of course thats not a guarantee that it works correctly.

Thanks guys

Holger


h_c_82

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Re: R1150GS // O2 Sensor fault
« Reply #1 on: July 29, 2018, 05:22:21 PM »
Heres the log file

h_c_82

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Re: R1150GS // O2 Sensor fault
« Reply #2 on: July 29, 2018, 05:22:47 PM »
and graphs

h_c_82

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Re: R1150GS // O2 Sensor fault
« Reply #3 on: July 29, 2018, 05:23:10 PM »
another one

h_c_82

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Re: R1150GS // O2 Sensor fault
« Reply #4 on: July 29, 2018, 05:24:01 PM »
and the last...sorry for enervything on ist own but the Server wouldn't let me post them all together

h_c_82

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Re: R1150GS // O2 Sensor fault
« Reply #5 on: August 20, 2018, 08:00:50 PM »
Although there was not much interest in this topic I would like to share the solution of the problem:

I suspected a faulty heating circuit. I measured the circuit under load (with a running engine and multimeter in parallel to the O2 wiring).
I got a constant 2V on the heating circuit. Thats not heating up anything!

I checked the wiring and everything seemed ok. I then changed the ECU as this was the last thing in the chain. The replaced ECU showed 0V at first on the heating and after a few seconds went to 13,5V. The lambda signal got up to 800mV exceeding 40° oil and I got a nice switching lambda signal exceeding 60° oil.

So the ECU was defective.

schuppi

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Re: R1150GS // O2 Sensor fault
« Reply #6 on: August 21, 2018, 09:41:08 AM »
Hello Holger

Yes, I did read it. And I thought "YES" , he is on the right way. Nothing better to write :)

Thank you for sharing the results
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Wolfgang
                                       talk less, drive more