Catalyst System Threshold Inefficiency question

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Aug 7, 2005 | 01:39 PM

InfiniteVTec

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The Dealer

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Catalyst System Threshold Inefficiency question

My car had a trouble code for this... would this cause the car to run rich or lean by any chance? or affect the A/F at any rpms?

what actually can triggers that code? could it also be from a bad O2 sensor?

Aug 8, 2005 | 05:04 PM

InfiniteVTec

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The Dealer

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bump

Aug 8, 2005 | 09:34 PM

syclone

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From: SoCal

most likely your cat is done and isn't performing its job effeciently anymore.

Aug 9, 2005 | 02:20 PM

InfiniteVTec

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Quote:

Originally Posted by syclone

most likely your cat is done and isn't performing its job effeciently anymore.

it was a Random cat... it's been on for like 5,000 miles but my car was missfiring for like a whole 1- 1/2 months due to the ECU's ignition circuit going out.... could that be enough to damage the cat?