Damage while driving with Bad Catalytic Converter

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Q45green
Posts: 9
Joined: Mon Sep 14, 2009 6:19 pm
Car: Infiniti Q45t

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How long can I drive with degraded catalytic converter before it becomes completely clogged. If I drive, is it better to drive fast or slow?


BadQ45t
Posts: 3255
Joined: Fri Jul 26, 2002 7:54 am
Car: '21 Nissan Leaf SL Plus (wife's car)
'05 Nissan X-Terra S 4x4
'97 Infiniti Q45t SOLD! Miss the old girl
'84 Nissan 300ZX (Original Owner)
'16 Mercedes Benz S550e V8 Power & 35 MPG
Location: Half Moon Bay, CA

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How do you know it is degraded?

Q45green
Posts: 9
Joined: Mon Sep 14, 2009 6:19 pm
Car: Infiniti Q45t

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I took it to Midas and they ran the engine code for me. It was P0430, Catalytic Converter Below Threshold B2.

I took it to another shop and they told me both cats were bad and all O2 sensors would need to be replaced. I don't know if they checked codes or not, they didn't say.

On top of that the car seems a little sluggish at high speed, but I haven't really pushed it to see what it can do.


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