VW TDI forum, Audi, Porsche, and Chevy Cruze Diesel forum banner
Cancel

need code 17656 help!

3124 Views 3 Replies 4 Participants Last post by  dmon, 
P
HELP!... 2002 JETTA TDI, about 143,000 miles. Bought it 6 months ago, runs great! Had timing belt and fuel filter replaced at that time. Occasional 17656 code initially, but nothing lately until a week ago on a long trip. I clear it, but it comes back after a couple trips. Even when the engine light is on, it still runs great, plenty of power, starts instantly, idles smoothly. Getting upper-40's fuel milage. Hard to believe there's anything really wrong, but what should I be looking at to get rid of the intermittant code?...

I've read thru some of the posts and it seems to be a code that is caused by problems with the injection pump, but most posts mention the engine running badly, so not sure that's the cause of my code!
Reply
Save
Like
1 - 1 of 4 Posts
D
resolution?

Did you ever solve this issue? I am having the same problem. The code shows, I can clear it, but it pops back up again. The IP was replaced, but I have adjusted the timing folowing procedure, and it runs perfect right now. I put a new fuel filter in at the same time as the pump replacement. Anyone have thoughts on this?

If it was a fuse, which would I be checking??

Should I just clean the wiring connector with electronic cleaner??

Any help would be great...thank you!

Dan
Reply
Save
Like
1 - 1 of 4 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
VW TDI forum, Audi, Porsche, and Chevy Cruze Diesel forum
A forum community dedicated to Audi, Volkswagen, Porsche, and all turbo diesel owners and enthusiasts. Come join the discussion about performance, modifications, troubleshooting, TDI, maintenance, and more!
Full Forum Listing
Explore Our Forums
VW Mk4 Jetta, Golf, New Beetle, Passat TDI forum Mk5 VW Jetta, Sportwagen, and Audi A3 TDI forum New TDI forum member introductions VW Mk6 Golf, Jetta, Beetle, Sportwagen TDI forum General Diesel Discussion
Top