2002 X-Type, 3.0L, Auto, 66,000 KM.
Had the alternator replaced 1.5 months ago - not charging. Been
fine since then till last week. Noticed that the radiator cooling
fan would sometimes run for a long time after engine was shut down.
This was so, even though car was not driven very far. 5 days ago
when I started the car, all of the warning/fault lights (which come
on momentarily when you start the car) did not go out. The car
drove normally and the lights went out normally the next time the
car was started. The check engine light then came on. Mechanic
checked for stored codes buth there were’nt any! Car ran normally
since then till today.
Today, the car was dificult to start and all of the warning/fault
lights remain on continuously. My mechanic checked for codes, again
none, but also checked the battery and found it not holding a full
charge. The alternator output is normal.
Our mechanic replaced the battery and the problem went away…for
24 hours, then returned! This time when he checked for codes we got
a single code: P1638. Have been following the diagnostic tree for
this code with no luck yet.
Has anyone had any experience with code P1638? If so, please help.
Any and all suggestions are welcome and appreciated.
Thanks in advance.
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