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DTCs 443 and 435 850 1994

posted by  someone claiming to be Jeremy on  Tue Nov 7 03:35 CST 2000 [RELATED]

Two weeks ago, while my 850 Turbo was idling, the Check Engine light went on. I procured the Volvo Pocket data book, and using the very informative Bay 13 webpage, extracted the 443 and 435 codes, then cleared them. Yesterday, on the way into work and at about 65 mph, the light came back on again. Last night I pulled the codes, and they are the same.

The booklet says that the messages are three way catalytic converter efficiency low (443), and the heated oxygen sensor (HSOS) front, slow (435. Does this mean I should replace these items, or that something else is wrong or going wrong?

Thanks,

Jeremy





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New DTCs 443 and 435 [850][1994]
posted by  someone claiming to be Jeremy  on Tue Nov 7 03:35 CST 2000 >


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