P0420 Honda -

Question

they recently purchased a 2001 Honda Civic eX with this codehowever it's also showing a p1259 code with this effect the P0420 code to set? if so should I just replace the solenoid and the screens

Answer 1

Hi there,

The code P0420 indicates an issue with the catalyst system. Here is a list of possible causes.

P0420 HONDA - Catalyst System Efficiency Below Threshold Bank 1

Read more: https://www.autocodes.com/p0420_honda.html

The code P1259 indicates an issue with the VTEC system. Here is a list of possible causes.

P1259 HONDA - VTEC System Malfunction

Read more: https://www.autocodes.com/p1259_honda.html