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Marty
Marty, Mercedes Technician
Category: Mercedes
Satisfied Customers: 54018
Experience:  Bosch Certified Master Tech. Over 35 years experience.
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FAULT CODE P1622 ON A 97 MB E300D, REPLACED FUEL SHUT OFF VALVE

Customer Question

FAULT CODE P1622 ON A 97 MB E300D, REPLACED FUEL SHUT OFF VALVE AND K40 RELAY, AFTER DRIVING FOR 30 MIN. STILL SHUTS OFF AND WILL NOT RESTART FOR A WHILE, WHAT OTHER CAUSES ARE THERE ?
Submitted: 7 years ago.
Category: Mercedes
Expert:  Marty replied 7 years ago.
Chat Conversation Started
eurotec :

Hi, I'd try running a new wiring directly from the shut off valve to the control unit and the other to ground and see if it still dies. You could also just power the valve directly with 12 volts and see what happens. A bad crank sensor can cause that motor to die as well.