trouble codes

tenor58

New Member
Mar 1, 2004
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Hello to all. I have a 1992 Mustang that I've owned for about a year, and I've been doing some of the maintenance that the previous owners deferred. (I think the spark plugs were the ones it left the factory with.) Anyway, after replacing the HEGO sensor, the eight plugs and the eight plug wires, the computer set two codes: 223, which means there's something wrong with the "dual plug inhibitor" circuit, and 224, which means there's a failure in the "ignition coil primary circuit." Has anyone experienced this before? Seems logical to assume the two are related, but I don't yet have that good an understanding of the system. Thanks in advance for your help!
 
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