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Help: P0001 volume regulator fault

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1.9K views 0 replies 1 participant last post by  -TXtruck-  
#1 ·
2019 F350 DRW. 111k miles. I got a P0001 volume regulator fault. So I replaced the volume regulator on the pump with an OE Ford part. Light is now back on with the same P0001 code. I don’t see any obvious harness issues. Any ideas? Thanks in advance!