But if they were in memory are you talking about on the computer or on the truck? If you're saying on the truck then why wouldn't they show up at the Ford dealer? Thanks

Scott

 

The codes were in the memory of the specific modules In your truck. I can't comment on why the Ford dealer couldn't see them. Did the mechanic check for Historic DTCs or only Active DTCs? Neither code is currently active nor are they turning the MIL on.

 

Best to take it to the dealer when the warning light is on or video it to show them when you take it in. Being a critical safety issue tell them you don't feel safe driving it until it's fixed and you want a loaner vehicle.

 

@Scott Holstein I'm having almost the exact same issue. Did you ever get it resolved? I already had the check valve and sensor replaced. Dealership now wants $650 to attempt to fix by replacing Brake booster, but are not making any promises. Mine only happens when using cruise control.

 

I know the original poster hasn't been on here in a couple of years, but I have an ongoing issue with the B11F0 code. I've cleared it twice and it keeps coming back any idea what the next step would be ?


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