E 320 BLUETEC (211.022) V6-3.0L DSL Turbo (642.920) (2007)
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out of the ambient exhaust gas into the 2 measuring chamber. The pump flow is thus negative. If lambda = 1 is available in the measuring housing,
oxygen must not be transported. In this case the pump flow = 0 mA. The respective required pump flow is the measurement for the oxygen:air ratio and
is processed in the CDI control unit for the corresponding functionality.
