> Ah, thank you very much. I made an appointment at the dealer to get it
> checked. I'll cross my fingers! Thank you.
Dave Gower is right, we can't remotely diagnose it. But, given the
history of the Foci, the odds are at least 2 out of 3 that it's a bad
DPFE sensor. That's $42 bucks from Ford, plus installation.
If they are going to charge you $80 or something for a diagnosis, I'd
tell them to change the DPFE and make sure they agree on the labor
charge ahead of time. I told my mechanic to do the DPFE if he'd charge
no more than 1/4 hour, or else I'd do it. He agreed, and it the DPFE
took care of it.
BTW, those code don't necessarily pin it down to one component. You
can get a code like P0401 "Insufficient Exhaust Gas Flow" and it's
probably the DPFE.
So, I'm not sure, but on my car, I went right for the DPFE. Wasn't the
much of a leap of faith, that was the third bad one in 100,000 miles.