Volvo AWD 850 Forum

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What is code 4-4-3 means? 850 1994

posted by  someone claiming to be Zee on  Tue Dec 4 01:37 CST 2001 [RELATED]

Hi,

I have 94 850 Turbo and I was trying to diagnose check engine light. First time around I got code 4-3-5 , which means slow response on O2 sensor. I cleared the codes and two weeks later I got check engine light again. This time around I got 4-4-3 followed by 4-3-5. Does anyone know the meaning of 4-4-3 code. I did check all my rubber elbows and replaced the bad ones.

Thanks in advance,

Zee

94 850 Turbo, 75k miles







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Re: What is code 4-4-3 means? 850 1994

posted by  someone claiming to be Charles Linden on  Tue Dec 4 03:00 CST 2001 [RELATED]

Its an inefficient catalytic converter. I used to get those every so often when my fuel trim would go to fuel rich.






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