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There are several things to check most of the time you will need to replace the catalitic converter, this is common enough that the dealer still stocks the parts, also the upstream and down stream sensors must be calibrated after you replace the cat. BE VERY CAREFUL not to confuse the o2 sensors when thay are removed,

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โˆ™ 2006-02-22 04:40:30
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Q: How do you solve a fault code ff23 rich exhaust detected on a 1994 jaguar xjs conv should you replace the o2 sensor or am i on the right track?
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