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1998 Chevy Tahoe catalytic converter.

Tiny
JON_M87
  • MEMBER
  • 1998 CHEVROLET TAHOE
  • V8
  • 4WD
  • AUTOMATIC
  • 142,000 MILES
My emissions was acting up so I had ran a diagnostic. It said that the downstream o2 sensors was all messed up so I had replaced them. Now the check engine light had come back on and I ran another diagnostic and now it gave me a code of P0430. It says that the catalyst system low effiency bank 2 is bad. I dont know what that means or what the means are of fixing something like that.
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Sunday, April 20th, 2008 AT 1:02 PM

1 Reply

Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
It is either a fault in your wiring *unlikely* or your Catalytic convertor is no more good *likely*

i say this because you already replaced the sensors. And sensor 1 isnt throwing the code.
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Sunday, April 20th, 2008 AT 1:07 PM

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