My check engine light has been coming off and on for 2 years. Code P0421. Had the 02 sensors changed last week, light went off. Drove for 4 days, light came back on (stayed on) for the past 2 days. Light went off this morning, chanced DEQ because tags expire in a week. IT PASSED! What gives? Hiccup in my cars system? Miracle?
David16
1
Should have the catylitic converter checked. Could be starting to malfunction.
Related topics
| Topic | Replies | Views | Activity | |
|---|---|---|---|---|
| Check Engine Light | 4 | 614 | July 10, 2010 | |
| 2001 Honda Odyssey Check Engine Code Cat Converter recurring P0420 | 11 | 13918 | January 16, 2014 | |
| My check engine light went OUT | 3 | 1400 | October 11, 2010 | |
| Strange 'check engine light' situation | 24 | 2280 | October 16, 2015 | |
| Catalytic converter | 8 | 2306 | July 28, 2011 |