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P1405 Diagnostic Trouble Code Discussion for March 2006

DPFE Sensor Upstream Hose Off or Plugged

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Trouble Ticket Help Requests for DTC P1405
Help Request Posted
1998 Ford E-250 Econoline 4.2L MIL Lamp on VIN: 1FTEPE2421
P1405: DPFE upstream hose off. ... this one, came in with P0401 and P0402 stored. I did NOT clear codes, yet. Ran KOEO test, passed. Ran KOER test, it also passed. Although the rpm did not change as much as I'd have liked when the EGR was open. I manually opened the valve using a vacuum p...
March 28, 2006