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Bipeflier
06-22-2021, 15:18
Changed the fuel filter on my '16 3500 today. Went smoothly but upon starting to check for leaks I got a CEL then the "175 miles to 65MPH" message.

I did remove the intake elbow between the air cleaner and the intake but did not disconnect any wires or plugs up there.

Any ideas?

Thanks

DmaxMaverick
06-22-2021, 15:58
Welcome aboard!

The "countdown" is almost always smog equipment related, and will usually come with a DEF or DPF warning. Double-check the MAF/IAT sensor connector on the intake (disconnect then reconnect). You'll need to pull the codes for more info. Just air in the system from a filter change should not cause it, unless it didn't seal well and is leaking in air. Let us know what codes you find.

Bipeflier
06-22-2021, 16:16
FIXED!

I went back and disconnected the water in fuel sensor and reseated it. Problem gone!

More Power
06-23-2021, 08:58
Glad you found the problem.

Generally... whenever a trouble code or warning message appears in connection with some other service procedure, there's usually a connection.

Welcome to the board!

Jim