OBDII P04B5 Error - 2017+ Chrysler Pacifica Minivan Forums
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post #1 of 4 (permalink) Old 03-28-2019, 08:00 PM Thread Starter
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OBDII P04B5 Error

Hi All,

Check engine light came on today at just shy of 10,000 miles. 2018 Pachy

Hooked up scanner and it returned a code of P04B5 On Ford this is a fuell filler flap error but I also see that it could be:

P04B5 DTC specifically refers to the camshaft (cam) timing. In this case, if the cam timing is over-retarded, the engine light will be illluminated and the code will be set.

Fuel door is shut but did open and close it. Tried clearing code with my scan tool to no avail.

Has anyone seen this code before on the Pachy?

Thanks
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post #2 of 4 (permalink) Old 03-29-2019, 08:21 AM
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According to the PacHy Service manual, that is indeed a "Fuel Door Stuck Open" DTC.

The switch function which determines status appears to be in the lock-unlock solenoid assembly. It just says to see if there's anything in the way or broken in the door lock mechanism and thereafter, it's a bunch of detailed checks of the electrical system. If you can pull the door open from the closed position with your fingernails (or trim tool) or it's not flush with body panel when closed, that is likely a mechanical problem. Looks like a trip to the dealer is in order.

I haven't seen that DTC on my 2017 PacHy. (Knocking on wood....)
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post #3 of 4 (permalink) Old 03-29-2019, 11:11 AM
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Here’s the Fault details. (My XPS converter removed the concept diagram however)

https://www.dropbox.com/s/s3jpsnj8g5...Fault.pdf?dl=0
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Last edited by m0ebius604; 03-29-2019 at 11:18 AM.
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post #4 of 4 (permalink) Old 03-29-2019, 12:42 PM Thread Starter
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Thanks for the info. Visually everything looks ok. Dtc does not clear. Off to the dealer on Monday.
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