Having problems with your 2003 Mitsubishi Eclipse Spyder ?
I have a 2003 mitsubishi esclispe spyder gt
\015 My check engine light is on i got a front light out autozone said (po421 code )warm up catalyst below threshold\015
Basically this means that the oxygen sensor\015\012 downstream of the catalytic converter \015\012 on bank 1 is detecting that the converter is not working as efficiently as it \015\012 should be (according to specs). It is part of the vehicle emissions system
Repair Help & Product Troubleshooting for 2003 Mitsubishi Eclipse Spyder
Tips for a great answer:- Provide details, support with references or personal experience .
- If you need clarification, ask it in the comment box .
- It's 100% free, no registration required.