2002 Dodge Neon check engine light codes

tfc35 · Posted at Thu Jun 26, 2008 11:22 am

Computer problem
2002 Dodge Neon 4 cyl Front Wheel Drive Automatic 160000 miles
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1st code that popped up was PO455 Evap large leak detected. Reset codes and code that pops up now is PO420 catalyst 1/1 effic failure. Where do we start to look for repair? I have researched and see vacuum leak, 02 sensor or catalytic converter. Any suggestions on what hose may be off causing the leak???

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merlin2021 · Posted at Thu Jun 26, 2008 11:29 am

P0455 might be due to your gas cap, try a new one..

tfc35 · Posted at Thu Jun 26, 2008 12:29 pm

Thank you. I will try that and keep you posted.

merlin2021 · Posted at Thu Jun 26, 2008 12:58 pm

ok...

tfc35 · Posted at Sun Jul 06, 2008 9:17 am

Gas cap worked thanks.

merlin2021 · Posted at Sun Jul 06, 2008 3:01 pm

Welcome!