Dtc 41 & 42

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Feb 15, 2006 | 04:43 PM

efficientsteam

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Joined: Nov 2005

Posts: 3

Dtc 41 & 42

I have codes 41, EST Open Circuit and code 42, EST is grounded. Anyone know whats causing this??? I have a new Delco Opti and a New Delteq. 1994 Z28. Thanks

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