LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

No Start DTC 41

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Old Apr 13, 2009 | 08:27 PM
  #1  
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No Start DTC 41

Car would not start so I replaced the Opti and the car fired up and ran great for a couple of minutes. Then would not restart.

Checked the wiring to the opti and found the harness broke and may not have been making good contact so I ordered a new one. Installed the new harness and it ran great. Daughter took it for a drive and it would not restart. Dragged it home to the garage and am stumped. BTW, it does have fuel, (40 psi at rail and you can smell it when cranking).

Pulled codes tonight and it threw a 41 IC Circuit open. I only have book 1 of the service manual, so can anyone help me with the test for this code?

Also, I had a spare coil and ICM and tried both with the same no start...

Help!

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Old Apr 13, 2009 | 11:34 PM
  #2  
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From: Hell was full so they sent me to NJ
Might want to mention the year of the car. The diagnostic charts are not the same for all years.
Old Apr 14, 2009 | 06:14 AM
  #3  
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Sorry, it's a 95 A4.

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