Question

2001 Dodge Neon with engine code P0420, how can i fix this code?

Answer 1

This code means the catalytic converter function is low. Most cases replacing the converter is required to resolve this problem.With a scan tool the rear O2 sensor can be monitored to confirm the converter is not working properly.

Answer 2

P0420 DODGE - Catalyst System Efficiency Bank 1

Read more: https://www.autocodes.com/p0420_dodge.html