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I have a w207 E350 petrol model.. Recently I encountered the engine light on. The symptoms includes loss of power, shaky engine and the car tends to halt when I pressed the pedal deeply.
The diagnostic machine came out with a '"y94 (quantity control valve)' has an electrical fault or an open circuit" fault code.
Is there any one have an idea of what's wrong with the car?
Last edited by boonteo75; Sep 18, 2019 at 05:19 AM.
I should note, not familiar with this engine. DIY (educated guess) check/replace 55, 165 in this order. Problem persists, could be pump 5. Definitive diagnose run “diagnostics” using MB Xentry. BTW you should be posting here: https://mbworld.org/forums/e-class-c...brio-a207-141/
Last edited by konigstiger; Sep 19, 2019 at 12:57 PM.
I should note, not familiar with this engine. DIY (educated guess) check/replace 55, 165 in this order. Problem persists, could be pump 5. Definitive diagnose run “diagnostics” using MB Xentry. BTW you should be posting here: https://mbworld.org/forums/e-class-c...brio-a207-141/
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