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Old 09-16-2018, 02:19 PM   #1
Ed463
 
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Default Error Code 2032-2

Hello,
I have a couple of codes showing up on my 2008 OM642.
I've read them with an Autel scanner. I don't have any running issues or a check engine light but I'd like to resolve what ever the issue is.
The codes are:
2032-2
B85 (oxygen sensor) - Voltage is too low

2038-2
B85 ( sensor) - Resistance too small.

I stored and erased the above before our latest trip to Southern Italy. Typically I only spotted this the day before we set off. So we've now done maybe 2,000 miles to get here, again no issues.

I've just checked the codes again and I'm now getting just
2038-2
B85 ( sensor) - Resistance too small.

Any thoughts would be appreciated
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Old 09-16-2018, 04:33 PM   #2
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Default Re: Error Code 2032-2

The only help I can offer is a bump and what Mercedes says,

[2] B85/2 (Oxygen sensor) - Resistance too small
Replace component B85 (Oxygen sensor).

That's all it says.

IMHO, unless you have a CEL and/or experiencing performance issues. Otherwise, I wouldn't worry about it. Do some battery terminal cleaning. How old is the battery? Modern vehicles require good clean power to function optimally.
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Last edited by Bobnoxious; 09-16-2018 at 04:44 PM.
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Old 09-16-2018, 04:59 PM   #3
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Default Re: Error Code 2032-2

Thanks Bob. I'll get hold of an oxygen sensor.
Could someone point me in the right direction WRT it's location?
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Old 10-23-2018, 06:20 PM   #4
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Default Re: Error Code 2032-2

So it was the oxygen sensor. Changed it and the codes disappeared.
Oddly it didn't show a cel and I can't tell any difference in performance after changing it.

We're in southern Italy at the moment, the sensor (Bosch) was around $240 here.
In the UK $80, plus about $15 in postage.
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