Tech Specialists : What does P0343 mean?
Thread Starter
Burning Brakes
Joined: Apr 1999
Posts: 1,150
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From: Saratoga CA
Tech Specialists : What does P0343 mean?
C5TECH or c4c5tech,
I had a check engine code and then P0343 was the code that I got when I checked it with my Autotap. I looked it up and it is the cam position sensor voltage too high. What in the world does that mean?
99 C5 M6
Race Director
Joined: Sep 1999
Posts: 12,438
Likes: 919
From: CONCORD NC
Re: Tech Specialists : What does P0343 mean? (akw408)
First line of action is to let us know if the car is running OK. If so, it was just a bad intermittent connection, and may never happen again.
The manual suggests either a bad connection, bad sensor, or bad PCM. I think if it was either of these last 2, your car would not be running, at least not well.
Dave
The manual suggests either a bad connection, bad sensor, or bad PCM. I think if it was either of these last 2, your car would not be running, at least not well.
Dave
Thread Starter
Burning Brakes
Joined: Apr 1999
Posts: 1,150
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From: Saratoga CA
Re: Tech Specialists : What does P0343 mean? (y2khardtop)
Thanks for the post y2k. Actually, the car is not running okay. It has now stopped running and there seems to be something seriously wrong with it. I had a cam installed a week ago or so, and then after this code now I got this ticking sound. It sort of developed into a sound kind of like marbles inside the engine. It got worse to the point where the engine sounded like it struggled to turn. I pulled the valvecovers off to see if a spring broke, but I don't see anything obvious. I pulled the spark plugs and 6 of them are white, and one has oil. These are new plugs that I put in after the cam. I am about to check the pushrods, but I don't know if I'll find anything there. It's probably unlikely though, since the marble sound does not sound like a bent pushrod. It's probably something more serious. Needless to say, I am not a happy camper. So I am looking for what P0343 means so I can determine responsibility for this problem. Thanks.
99 C5 M6
Burning Brakes
Joined: Feb 1999
Posts: 933
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From: Santa Clara Ca
Re: Tech Specialists : What does P0343 mean? (akw408)
The CAM position sensor is not reading correctly. reading a high input.
You might assume whoever did the cam did not install something correctly or the PCM does not know the position of the sensor and cannot tell if pistons are in fire or exhaust stroke.
You might assume whoever did the cam did not install something correctly or the PCM does not know the position of the sensor and cannot tell if pistons are in fire or exhaust stroke.
Safety Car
Joined: Feb 2000
Posts: 3,635
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From: houston Texas
Re: Tech Specialists : What does P0343 mean? (akw408)
Thanks for the post y2k. Actually, the car is not running okay. It has now stopped running and there seems to be something seriously wrong with it. I had a cam installed a week ago or so, and then after this code now I got this ticking sound. It sort of developed into a sound kind of like marbles inside the engine. It got worse to the point where the engine sounded like it struggled to turn. I pulled the valvecovers off to see if a spring broke, but I don't see anything obvious. I pulled the spark plugs and 6 of them are white, and one has oil. These are new plugs that I put in after the cam. I am about to check the pushrods, but I don't know if I'll find anything there. It's probably unlikely though, since the marble sound does not sound like a bent pushrod. It's probably something more serious. Needless to say, I am not a happy camper. So I am looking for what P0343 means so I can determine responsibility for this problem. Thanks.
99 C5 M6
99 C5 M6
Melting Slicks
Joined: Aug 2000
Posts: 2,146
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From: Florida
Re: Tech Specialists : What does P0343 mean? (akw408)
Here are a couple of sites (or pages) http://www.corvetteplanet.com/search.cfm http://97vette.com/howto/codes/index.html
