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P218F code. DEF flow problem

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CraigH

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My 2022 6.7 HO keeps popping the P218F code which is a DEF flow problem. The dealership has replaced DEF pump, sensors and injector as well as the vehicle’s Powertrain Control Module. Service manager advises Stellantis tech support out of ideas. Anyone else had this issue?
 
Nope, but would love to hear the outcome!
 
Wiring was checked this week. All OK. Tech is going to try to get authorization to replace DEF tank and sensor as that’s about all that’s left to replace. Code popped back up after driving 25 km. DEF usage seems normal.
 
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