P04DB error code

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Caleb Sousley

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Dec 16, 2020
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Missouri
Driving my truck home today and the CEL came on. It was the P04DB code:
(The engine control system has detected an improper connection/installation of the engine crankcase hoses)


When I was looking at the engine bay it looked like the dealership was messing around with my aftermarket COI during my oil change (looking for filter I assume) and didn’t put it back together properly.

Would that cause this error code to come up?
I cleared code after making sure all hoses were properly installed and will have to see if it comes back tomorrow.
 

2020FordRaptor

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Jun 4, 2022
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Nevada
Driving my truck home today and the CEL came on. It was the P04DB code:
(The engine control system has detected an improper connection/installation of the engine crankcase hoses)


When I was looking at the engine bay it looked like the dealership was messing around with my aftermarket COI during my oil change (looking for filter I assume) and didn’t put it back together properly.

Would that cause this error code to come up?
I cleared code after making sure all hoses were properly installed and will have to see if it comes back tomorrow.

Yah I guessed you'll have to wait and see. If it shows up again, take it back to the dealer and ask him again.
 
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