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Re: 4-3-5 fault code question 850 1995

posted by  someone claiming to be Terence Lui on  Sat Nov 25 02:06 CST 2000 [RELATED]

Hi Jim,

I got the same code about a month ago on my 850 turbo. 4-3-5 is the front O2 sensor. A cheaper way to fix the problem is to get a Bosch unit and then splice it into the existing wires. However, make sure you find out what's the real problem is first. In my case, the 02 sensor was actually ok, but it was the wires that were bad. According to my mechanic, the voltage on the wire was higher than normal, so they had to replace the whole unit. Good luck.

Terence





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