PO 340 camshaft positioning sensor

Gpuller · 01-29-2004, 10:38 PM

I sure hope someone out there can give me a few ideas on this problem. i have a 97 SL1 115.000 miles it has been maintain great, now that cold weather has been setting in the check engine light came on! the code that was pulled out was a po340 which it said was a crankcase postioning sensor circut malfunction. According to the haynes book the saturns dont have a camshaft postioning sensor. last spring i recieved a misfire on #1 cylinder error and replaced plugs and wires and it seamed to take care of the problem. Can anybody give me any ideas on what could be causing the po340 camshaft postioning error!!

Dach · 01-29-2004, 11:25 PM

Welcome to the boards. It has more to do with misfiring I believe. Do a search in this forum or the tech forum on crankshaft postion sensor and you'll get more help then you'll need.

Gpuller · 01-30-2004, 01:01 AM

Thanks for the info bud i will check this out

wolfman · 01-30-2004, 01:02 AM

Your 97' SL1 does NOT have a "camshaft position sensor" in so much as it being something you can physically replace. This code indicates a detected misfire. Prime suspect in a SOHC are bad plug wires, corroded coilpack towers or bad plugs. (Pretty much in that order)

eRic 02sc2 · 01-30-2004, 12:11 PM

being a saturn owner i'd start replacing the cheap parts first spark plugs, wires, then coils to see if the code goes away.

Gpuller · 01-30-2004, 02:39 PM

You guys have been very helpful. last time this happen i replaced the plugs and wires and it was fine till the colder weather sat in. was going to try the plugs and wire again it has been about 7 months since the last plug and wire job but you never know. i would suppose that going in and out of the garage 0 deg to 50 deg corosion could be on the coil packs from condinsation. thanks again all for your responces.

01-30-2004, 01:02 AM	#4
wolfman Super Member Join Date: Jun 2002 Location: Texas Posts: 12,066 wolfman's Photos	Your 97' SL1 does NOT have a "camshaft position sensor" in so much as it being something you can physically replace. This code indicates a detected misfire. Prime suspect in a SOHC are bad plug wires, corroded coilpack towers or bad plugs. (Pretty much in that order) ... Old Saturns never die, people KILL them, so check your damn oil! "Unthinking respect for authority is the greatest enemy of truth." Albert Einstein

01-30-2004, 12:11 PM	#5
eRic 02sc2 Super Member Join Date: Feb 2000 Location: Closed Course. Professional Driver. Posts: 14,542 eRic 02sc2's Photos	being a saturn owner i'd start replacing the cheap parts first spark plugs, wires, then coils to see if the code goes away. ... eRic 02sc2 DR SCCA Solo 2001,2002 1st DSP WHRRi 2007,2010 Fun Run 1st DR SCCA 2008 Triathalon 1st PF DR SCCA Solo 2009 2nd ST DR SCCA Solo 2010 1st ST Crutchfield: pkeqe-6j8e3-d2qqe

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01-29-2004, 10:38 PM	#1
Gpuller New Member Join Date: Jan 2004 Location: Iowa Posts: 3	PO 340 camshaft positioning sensor I sure hope someone out there can give me a few ideas on this problem. i have a 97 SL1 115.000 miles it has been maintain great, now that cold weather has been setting in the check engine light came on! the code that was pulled out was a po340 which it said was a crankcase postioning sensor circut malfunction. According to the haynes book the saturns dont have a camshaft postioning sensor. last spring i recieved a misfire on #1 cylinder error and replaced plugs and wires and it seamed to take care of the problem. Can anybody give me any ideas on what could be causing the po340 camshaft postioning error!!

01-29-2004, 11:25 PM	#2
Dach Senior Member Join Date: Jan 2002 Location: Texas Posts: 1,033	Welcome to the boards. It has more to do with misfiring I believe. Do a search in this forum or the tech forum on crankshaft postion sensor and you'll get more help then you'll need.

01-30-2004, 01:01 AM	#3
Gpuller New Member Join Date: Jan 2004 Location: Iowa Posts: 3	Thanks for the info bud i will check this out

01-30-2004, 02:39 PM	#6
Gpuller New Member Join Date: Jan 2004 Location: Iowa Posts: 3	You guys have been very helpful. last time this happen i replaced the plugs and wires and it was fine till the colder weather sat in. was going to try the plugs and wire again it has been about 7 months since the last plug and wire job but you never know. i would suppose that going in and out of the garage 0 deg to 50 deg corosion could be on the coil packs from condinsation. thanks again all for your responces.

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