2002 Jetta TDI Service Engine Light is on and glow plug light flashes. Code is "upper stop valve quantity adjuster N146 inop. Blocked upper stop valve obtained. Does anyone know what this all means? Tx jesse
2002 Jetta OBD code question
Nov 19, 2006
0 Replies
Join the Discussion
Have something to add? Share your thoughts — no account required.
Didn't find your answer?
Ask the community — no account required