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Codes Checked - not in book...? 850 94

posted by  someone claiming to be Barry on  Sun Sep 23 05:28 CST 2001 [RELATED]

OK - check engine light came on in my 1994 855 Turbo. No problem. Pulled codes 443 and 435 for the fuel injection system.

443 - nowhere in my Haynes manual

435 - Heated O2 sensor response slow

So - anyone have a guess as to 443?

I have had 435 and 443 show up twice in the last month. Don't have a clue as to the one, but do I need to replace the heated O2 sensor?

Thanks,

Barry







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Re: Codes Checked - not in book...? 850 94

posted by  someone claiming to be Rich K. Fairfax, VA on  Sun Sep 23 06:57 CST 2001 [RELATED]

The 443 is for Three way catalytic converter (TWC) efficiency low. Replace the HO2S and the 443 will more than likely go away. The longer you run with a bad HO2S the more chance you take at damaging the Catalytic Converter.






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