Failed emissions with codes
1998 Honda Accord 4 cyl
Failed emissions with the following OBD Trouble Codes: P0420 Catalyst System Efficiency Below Threshold (Bank1) P0401 Exhaust Gas Recirculation Flow Insufficient Detected P1457 (no description but I have been told it is an EVAP leak?) My wife lost gas cap 3 years ago and has driven the car for 50 miles. I bought the original gas cap after few days in Honda Dealership and week after I got engine light on. I had engine light on for the last 3 years and always passed emission test except this year because now test check computer as well. Please help. |
I've had that P0420 code and it seems like everyone gets it at some point in an Accord's life.
Here is a post I did awhile back on it, basically I looked for leaks, looked at O2 sensor and the catalytic converter (it ended up being a combination of all 3 but an easy fix). This should address the P0420 code and usually the other two will hopefully clear out as well. Here is the link to the post https://www.hondaaccordforum.com/for...de-pics-50458/ |
Thank you mamtsberg I will try.
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