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Re: Catalyst Monitor - P0420 Catalyst Efficiency below threshold.
Posted to Technical Discussion Forum on 8/26/2001 6 Replies

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P0420? Are you sure it wasn't P0421?

If you were a member you could have searched and found a couple of posts of mine on this but .... LOL!

We have run 3 of these through our project and all three... Login to read more.

6 Replies Received (View Replies)