Sensor abs wheel speed sensor acceleration yaw rate.
Bmw dpf back pressure sensor.
A good one at idle would be 10mb or less bring revs up to about 2500rpm and less than 100mb flat out under load and 300mb max.
You would normally measure dpf pressure in mb.
I needed to check if it was indeed blocked and the first back pressure reading showed exhaust gas back pressure at 940m b at 2 000 rpm.
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300mb is about 4 5 psi.
There are several possible reasons why a dpf could be showing a reading like this.
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When i do the dpf back pressure test with the just the engine running and no driving i have approx 12mbar at idle 55mbar at 2000rpm and 100mbar at 4000rpm these results are roughly half the bmw max recommended value.
Next we simply tested sensor plausibility which showed a reading of 0 m b with ignition on engine off.