Code 41 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 11-28-2006, 07:14 PM   #1
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Default Code 41

I finnaly got my car up and running from the engine swap I did on it. From the start it had a SES light on. I just checked it yesterday and when I first did it, it gave me a 14 a 41 and a 56... however after disconnecting the battery for 10 mins it only gives me a code 41. What exactly do I have to do to fix this code?
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Old 11-28-2006, 07:17 PM   #2
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Scratch that, it'* a cam sensor circuit code.
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Old 11-28-2006, 07:32 PM   #3
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so then I just replace the sensor and not the magnet (cam sensor is the one with the magnent right?)? Where exaxtly is the cam sensor is it behind the harmonic balancer?
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Old 11-28-2006, 07:38 PM   #4
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The cam sensor pickup is at about the 11:00 O'Clock position relative to the crankshaft pulley, and the 7 O'Clock position relative to the water pump pulley. It senses the passing of an interrupter magnet that snaps into a hole on the backside (engine side) of the camshaft gear right behind the front cover. The pickup costs about $20 and is held in place by a 10mm head bolt. Remove the bolt, then pull and wiggle the sensor out. It has an o-ring on it to seal the oil in the front cover. With the sensor out, get a mechanic'* mirror and a flashlight. Shine the light onto the mirror and into the hole and you will be able to see the cam gear. Turn the motor around by hand (two crank revolutions for one cam revolution) looking for the interrupter magnet. If you find nothing but a hole or broken pieces of plastic, you will need to install a new magnet ,about $8. You do that the "right" way by removing the timing cover and inserting it from the backside of the gear. Or search this site for "cam sensor padgett" for an alternate method. Hey, maybe the electrical connection to the sensor is just loose!


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Old 11-28-2006, 11:26 PM   #5
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http://bellsouthpwp.net/p/a/padgett46/cammag.htm

Here'* Padgett'* fix. I've done it myself along with several other Reatta owners and haven't ever had problems with it. Removing the timing cover and everything is pretty tedious.
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Old 11-29-2006, 01:15 AM   #6
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The reason some like to remove the front cover when the magnet is missing is to find and remove the parts so that they don't end up between the gears and/or the chain and cause internal damage. When the cover is off, you can check the timing chain to see if it needs to be changed. Also, if your front crank seal is leaking, removing the cover affords an easy opportunity to change it out.
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Old 11-29-2006, 02:38 AM   #7
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I respect that
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Old 12-30-2006, 02:09 AM   #8
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Been busy with the holidays and haven't gotten around to fixxing this problem just yet. Hopefully I can check it out tommorow. Anyway out of curiosity what is invovled in taking off the timing cover? Is it just a pain in the *** and takes forever or does the engine need to be lifted/come out?
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Old 12-30-2006, 02:22 AM   #9
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Quote:
Originally Posted by Soulmonger
Been busy with the holidays and haven't gotten around to fixxing this problem just yet. Hopefully I can check it out tommorow. Anyway out of curiosity what is invovled in taking off the timing cover? Is it just a pain in the A$$ and takes forever or does the engine need to be lifted/come out?
You don't have to pull the engine. But it is a major job. Buy a Chilton''* 28200 for the specifics. These pics should help.
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Old 12-30-2006, 03:17 AM   #10
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Water pump and HB have to be removed?
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