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P2023 check Y83 (intake air manifold turnoff switch valve).Circuit open
P2023 check Y83 (intake air manifold turnoff switch valve).It is OFF when left intake air manifold is closed.
P2023 check Y83 (intake air manifold turnoff switch valve).It is OFF when right intake air manifold is closed.
P2023 check Y83 (intake air manifold turnoff switch valve).It is ON when left intake air manifold is closed.
P2023 check Y83 (intake air manifold turnoff switch valve).It is ON when right intake air manifold is closed.
P2023 check Y83 (intake air manifold turnoff switch valve).Short to ground
P2023 check Y83 (intake air manifold turnoff switch valve).Short
P2023 K40/7kN (air pump relay)(P0410)
P2023 K40/7kN (Air pump relay)(P0410)
P2023-001 component G3/1 (O2 sensor before CAT) heating device,positive short [P0141]
P2023-002 component G3/1 (O2 sensor before CAT) heating device,overload short [P0141]
P2023-004 component G3/1 (O2 sensor before CAT) heating device,wire interrupt [P0141]
P2023-008 component G3/2 (O2 sensor before CAT) heating device,heating power too small.[P0141]
http://www.benzworld.org/forums/general-mercedes-benz/1429876-mercedes-benz-diagnostic-trouble-codes-dtc.html
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