Engine Mechanical problem
1998 Honda Accord 4 cyl Front Wheel Drive Automatic 161000 miles
Hello, I have a 1998 Honda Accord that has a check Engine light on. It reads: P0420. Catalyst System Efficiency Below Threshold (Bank 1) I think. But we put a Bosch O2 sensor under the hood. Along with a new catalytic converter. It was not the stock one that comes from Honda. That one was too expensive. The engine light come on every 20 miles or less when it gets cut off. The same code comes up. I am averaging 21mpg before it was around 30mpg. I am guessing it is that Bosch o2 sensor? What kind should I get? Please help.
have the same problem?
Tuesday, July 6th, 2010 AT 8:47 AM