My 2003 Mitsubishi Eclipse had an exhaust leak for years so I decided to get it fixed professionally. It was driving perfectly fine for 2 days until the Check Engine Light popped up giving me P0421. I never had this code pop up but I've had some
other troubles with my car prior to the exhaust leak that have been fixed. The plugs, sparks, fuel pump, idle control valve and gasket have been replaced and I didn't get any codes until after the exhaust leak was fixed. I don't hear any leaks from my car but I thought I heard some noise coming from the car hat sounded like a clicking noise. Is it safe to drive or an immediate fix that has to be done?
Thanks!
What makes this problem better or worse?
No issues while driving
How long has your 2003 Mitsubishi Eclipse had this problem?
RepairPal Certified shops can diagnose and repair your 2003 Mitsubishi Eclipse. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
Your car should be safe to drive. That code means that the warm up cat convertor efficiency is low. Possible causes are a cat convertor that is deteriorating, an oxygen sensor failure or an exhaust system leak..Some testing is in order. If the car is acting sluggish, you may want to bring it in soon to have it looked at. Convertors can get so bad that it can cause that vehicle not to start at all. Please give me a call if you require furthur assistance 248-643-7690 Glenn Auto Lab of Troy.. .
