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!
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!
