Catalyst System Bank 1 Low Efficienty. What can I do?
Wednesday, March 24th, 2010 AT 2:12 PM
1 Reply
RHALL77
MECHANIC
3,361 POSTS
Sounds lik your at the point where you might have to replace your cat converter. Stop at your local muffler shop for them to take a look at it. If it gets worse, your going to start to loose power and possibly get stranded.