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Error P1621
Posted: Mon Sep 26, 2011 8:11 pm
by Car-Nut
A friend connected a cheap error code machine to my X330
at the week-end it through up:
P1621
He didnt know what it meant, does any one here 
Re: Error P1621
Posted: Mon Sep 26, 2011 9:14 pm
by ptjs1
Clive,
I believe that the offical interpretation of fault code P1621 is:
Control Module Long Term Memory Performance/ Immobilizer Code Words Do Not Match
However, I have also seen threads on other websites where owners apparently have had this fault code and have also had a breakdown of one of the ignition coils. Of course, as with any fault code still held in memory, it may not have anything to do with current symptoms on the car.
My suggestion would be to just clear the code and see if it returns together with any concurrent running problems.
Good luck
Paul
Re: Error P1621
Posted: Mon Oct 31, 2011 7:43 pm
by Car-Nut
Anyone in the Lancashire area got a code reader to clear my code please
Happy to hand over some beer tokens, beer or wine….
Will come to you in Lancashire at the wkd, Costa del Telford all week
If anyone can assist please let me know
Thanks
Re: Error P1621
Posted: Mon Oct 31, 2011 8:00 pm
by J44EAG
Try the classic "hard dump" method, Clive.
Disconnect battery for twenty minutes. Have radio code to hand and reset digital clock if fitted.
The disconnect should clear stored codes. If the code comes back, a fault does exist.
Mike
Re: Error P1621
Posted: Mon Oct 31, 2011 8:11 pm
by Car-Nut
Thanks Mike youre a Gent 