Back pressure

pcdee · Post by **pcdee** » Mon Jan 26, 2026 7:47 am

Good morning all.

Anyone know what the back pressure means at 8192.0 with the car off? According to Gemini it means faulty wiring, it thinks it's the female pins which connect to the dpf sensor are not tight enough. I have checked the voltage which is 5v. Please see attached.

Leslie · Post by **Leslie** » Mon Jan 26, 2026 10:49 am

Should be zero , faulty sensor or wiring I suspect.zit only had a regen 22 miles ago by the look of it.

Opps wrong conversion

pcdee · Post by **pcdee** » Mon Jan 26, 2026 4:29 pm

Thanks, I suppose the cheapest option is to buy a new dpf sensor and try that first.

Leslie · Post by **Leslie** » Mon Jan 26, 2026 5:44 pm

I think I got that conversion wrong again lol
1hpa is 1mbar so sensor should be reading 0 with engine off.
Different units fry my head lol

Leslie · Post by **Leslie** » Wed Jan 28, 2026 4:13 pm

Let us know if new sensor worked

pcdee · Post by **pcdee** » Wed Feb 11, 2026 12:03 pm

I bit of an update. It wasn't the sensor its the female pins on the connector, I moved all three of them in slightly with a sewing pin and the 8192 reading dropped to 0.90. It was fine for a few days and now gone back to 8192 reading.
I can't find a new connector anywhere, any thoughts?

X5Sport · Post by **X5Sport** » Wed Feb 11, 2026 12:33 pm

Have you had a look at Realoem for the connector? The database has been updated recently so the part number/pins may well be on there.

pcdee · Post by **pcdee** » Wed Feb 11, 2026 1:29 pm

I think I will have to get an auto-electrician, not much room down there and they will probably be able to replace just the pins.

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Back pressure

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Back pressure