got some codes and need some input (16,41,42)
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Joined: Mar 2007
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got some codes and need some input (16,41,42) Well i was driving the other day and i got on it and the car felt ok. but when i let off the car shut off on me but it started back up. but like 30 seconds later it shut off on me again and would not restart it would just crank, Well when i get the car home i hade code 16 (low res pulse) 41 and 42 (ignition control modual) my question is witch one is my problem the opti or the ignition control modual?
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Joined: Feb 2008
Posts: 325
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From: I moved to over there
Well i was driving the other day and i got on it and the car felt ok. but when i let off the car shut off on me but it started back up. but like 30 seconds later it shut off on me again and would not restart it would just crank, Well when i get the car home i hade code 16 (low res pulse) 41 and 42 (ignition control modual) my question is witch one is my problem the opti or the ignition control modual?
Teching In
Joined: Jan 2008
Posts: 11
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From: oklahoma
if at all possible i would find a gm service manual for those codes and follow the flow charts in them i had a code 42 in my vette and it was a wiring issue never would have found it if i didnt follow those charts. good luck
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Staging Lane
Joined: Jun 2007
Posts: 72
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From: Syracuse, NY
Well, I would say that if your throwing a code 42 you'd check the icm first with a multimeter and if your getting good readings off that then trace the wiring. If the opti is throwing the code 16 then I'd check the wiring first since it's easier to do and if all else fails pull the opti out.
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