trouble code p0421 and p0431
anusemoon
08-22-2004, 02:06 PM
what do these codes mean.....
p0421 and p0421 ( warm up catalyst efficency below threshold ( bank 1 and 2 ) 98 millenia failed emission test how can i fix this???
p0421 and p0421 ( warm up catalyst efficency below threshold ( bank 1 and 2 ) 98 millenia failed emission test how can i fix this???
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