E 320 BLUETEC (211.022) V6-3.0L DSL Turbo (642.920) (2007)
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of DPF and downstream of DPF.
The differential pressure between the exhaust gas pressures upstream and downstream of DPF has an effect on the piezo resistant pressure sensor
element.
This generates a voltage, which is reinforced by the integrated silicon chip and is passed on as a voltage signal to the CDI control unit.
