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Old August 23rd, 2007, 12:20   #1
Join Date: Jul 2007
Location: Prince Edward Island Canada
Default P2637 Torque Management Feedback signal "A"

What does this mean? Everyday a new code. Going to the dealership in the morning. The 04 jetta TDI's are a lot more work than my old 91 was.
Since I bought this car I have managed 1200 KMS between trouble codes.
P2637 with the luck I am having with this car it probably translates to a new transmission even though there is only a little over 82000 Kms 50000 miles. Any advice gladly accepted.
04 Jetta Wagen Automatic with PD engine
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Old January 18th, 2013, 12:06   #2
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Join Date: Aug 2005
Location: Hickory, NC
TDI(s): 04 JSW bew

I have had this code appear 2x now and in both cases it was a lack of proper signal from the alt to the ecu...once last year( which was a shocking experience)
and last week...P2637 Torque Management feedback signal a.

What I experienced on both occasions was hard shifting, preceded by a slight increase in engine rpm....

a simple unplug/plug back in of the alternator returned everything to normal and the codes disappeared.....after I got home I cleaned the alternator plug(male & female ends) with a good electrical cleaner and added some di-electric grease...

I will be having a full vagcom scan this weekend at a gtg, but last year when this happened I also had a full vagcom scan and everything showed up in specs....
Your tranny is fine
hope this helps ease your concerns...bd
04 jetta wagon, BEW, 09A
RC2, F06 Stg 2 cam,17 turbo, E-codes, Koni's, TT LCA's,
Skid Plate, tint, cat/vent/muffler/intake B'fly'd..frostheater..cat 2micron FF.
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