How should I star to tackle with these OBD code in my Honda 2000 odissey.?
Here are the codes:0122-
P0420 - p1456
- kevusabornLv 79 years agoFavorite Answer
p 1456 - Check that the fuel cap is securely seated, and there are no fuel smells from under
the fuel filler neck ( especially after filling up )..
This could be leading to the PO 420 problem.
Try starting with this.
- ?Lv 59 years ago
PO122-TP/APP SENSOR OR SWITCH LOW INPUT PO420-CATALYTIC CONVERTER SYSTEM BANK 1-EFFICIENCY BELOW THRESHOLD P1456-MFGR SPICIFIC CODE. What I would do is frist replace the TPS then test again. Im sure that the cat is bad on the L/S and going to have to be replaced.