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Discussion Starter · #1 ·
Started getting CELs more & more often. Checked the ECM - Code 12.

Looked at my Helms manual on diagnosing this problem. The diagnostic is very elaborate. I took it as far as my tools & skills would permit and narrowed it down to the EGR valve. Got a new EGR from Acura of Augusta for about $165. Took me about 15 minutes to remove & replace.

No more CEL (so far).
 

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Discussion Starter · #3 ·
Before I replaced the EGR, I took the old one off & tried to clean it. There isn't much you can clean. I reinstalled the old one & still got the CEL. Also, the new EGR valve includes the valve lift sensor. If this sensor goes bad, it will cause the Code 12 even if the valve is working properly.
 
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