have a 2003 nissan sentra se-r spec v shooting error codes P1448, P0455, P0420.

2003 NISSAN SENTRA
113,203 MILES
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FRITOSPECV03
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  • 1 POST
I havn't really tried nothing because it is dark right now i doubt its gas cap its still factory cap.
Oct 1, 2011 at 1:21 AM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,193 POSTS
  • ASE Certified Mechanic
p1448 EVAP canister control valve open
p0420 catalyst below threshold
p0455 EVAP large leak detected

The entire problem may be the result of the canister control valve.

Have the system fogged to determine where the leak is located.
Oct 1, 2011 at 1:30 AM
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