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Check Engine and Code 1-4-3 in A2 850 1994

Driving in to work this morning I got a check engine light. I pulled off and read the codes in A2; I had code 1-4-3. After searching a little I found 1-4-3 was a knock sensor fault. I also found that some people said it could do with the installation of the timing belt. Is this true? The reason I ask, I had my timing belt replaced on December 22nd 2004, so a little over a month ago, if there was a timing belt problem wouldn’t that code come up sooner? I just want to eliminate that before I start trouble shooting the sensor. Does anyone have any suggestions for troubleshooting this problem?

Thanks in advance,
Scott
--
Scott K - 1994 850 Turbo






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