Question about 2003 Suzuki Aerio
I am assuming this is a four cylinder engine If so, I would also assume it has a oxygen sensor before the catalytic converter, (upstream) and one behind, (downstream). These sensors send a signal to the engine computer giving an emissions reading level before, and after leaving the catalytic converter. My best guess is the o2 sensors may be functioning normally but, the converter is no longer performing as it should, hence the, (catalyst efficiency below threshold). However, I would not rule out malfunctioning o2 sensors as well.
Posted on Mar 13, 2011
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Jan 26, 2016 | Cars & Trucks
Nov 13, 2015 | 1997 Ford Explorer AWD
Jun 02, 2015 | Toyota Cars & Trucks
Mar 09, 2013 | Cars & Trucks
Aug 21, 2010 | 2001 Volkswagen Golf
May 31, 2010 | 2001 Nissan Altima
Feb 18, 2010 | 2000 Toyota Celica
Nov 13, 2009 | 2000 Subaru Outback
1,189 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: