I have a 2005 pontiac grand prix 3.8l. With 205k miles ont. If the ignition control module is bad can it cause it to throw emission fault codes? It brings up code. P0420 – Catalyst System Efficiency Below Threshold (Bank 1)
it also has a ignition module code that comes and goes
have the same problem?
Sunday, November 14th, 2010 AT 8:15 PM