Mercedes-Benz W639 particulate filter differential pressure sensor and P2453
VitoViano 3.0 CDI
W639 Viano: why does code P2453 appear and the power disappear?
P2453 refers to the particulate filter differential pressure sensor, which measures the pressure difference across the filter. A sensor fault can cause the code and loss of power, and replacing the sensor has fixed the fault. Check the sensor before suspecting the filter itself.
My W639 Vito is in limp mode with code P1400: where is the fault?
The differential pressure sensor plug or connectors may be loose. When the connector contact was restored, the fault codes cleared and power returned. Check the condition and fastening of the connector before replacing parts.
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