Code p0343, Cam sensor

That code refers to:

"DTC P0343 Intake Camshaft Position (CMP) Sensor Circuit High Voltage Bank 1".

So it will be the Intake camshaft on the RH (passenger side).

The Circuit high message means that either the sensor has failed, or an open circuit exists (broken wire etc).

Happy hunting!
Jon

Thanks so much. haven't checked it out yet but will definitely let you know what happens. thanks again

One other question is that exhaust bank one or intake bank one

Intake!

Let us know how you're doing!

Jon

I removed that sensor and tried just cleaning it off a little and reinstalled it just to see before i buy the new one. Wouldn't start so i put the computer reader on the car just to make sure and now it's reading 4 codes PO342, PO367, PO348 and PO393. Now I'm really confused. Help thanks

Also, when i first put the reader on it says 7eA and 7e8 i believe and then i click on those and it said the other 4 codes. Makes my head spin. LOL. thanks again.

Okay,

I don't believe the sensor to be the issue, to me, what you're seeing is a wiring problem. I won't have access to schematics until I get home tomorrow. Then I will help you troubleshoot this further.
Jon

Thanks so much. Anybody want to buy a nice CTS? LOL !!

Hello again Jon, was wondering if you had any more ideas on my camshaft or wiring problem on my car.

Hi Pete,

Sorry for the slow reply... I am having a hard time getting to the schematics for your vehicle. I'm trying to sort that out, hopefully soon! With all of the codes you posted, I am beginning to think that the crank sensor may have something to do with this, or perhaps a wiring issue that is common to both of the sensors reporting errors. I'll see if I can have someone post the schematics up here until i get me access fixed.

Jon

Hello just to help,i was able to dig up this diagram. So you see the plain red wire should be battery voltage, the brown/white wire should be a pulse with your test light while cranking. the pink/black wire should be sensor ground. Hopefully this diagram is correct.

All of the cam sensors share the 5 volt reference (Gray wire) and ground circuits (Tan wire). From the description it sounds like one or the other has a bad connection as that would cause codes on all of the sensors. If you have a voltmeter the easiest test would be to connect it to a good ground, Then remove the connector from the sensor you removed. Use a small pin to connect the positive probe to the Gray wire. You should have 5 volts with the key on. Now start moving the wiring that goes to the sensors. you don't want to see the voltage change regardless of how you move the wires. Now remove the pin from that connector and put it back on the sensor. Remove the connector from another cam sensor and connect to that gray wire. You should still have 5 volts. This will show you if that sensor is shorted. To test the ground circuit is a bit harder, you need to connect the meter in the Tan wire and the 5 volts on the Gray wire, Then move the wires like you did before. Again you don't want to see the voltage change or drop out.
Being these are all circuit codes it isn't likely to be the sensors themselves, it is in the wiring to them. Either a broken or corroded wire. Being that you suddenly got all of the new codes after you removed the first sensor suggests it is close to the splice for all of the power or ground wires. I'm thinking it may be the 5 volt circuit as the ground side is shared by other sensors as well and those should be showing problems as well.

My thoughts exactly, just hard to describe without the diagrams!

Jon

I have a question I'm purchasing a used throttle body for my 2004 cts and they always have 2 different IDs for the 3.6 12571081 or 12589056 how do i know which one i need thanx

The first part is the original design part. It has been discontinued by GM for a while so rebuilt and used are about the only sources for it, the second is the updated part that replaced it due to the issues they had with the first design.

To use the newer part on your engine you also need to replace the wiring harness connector ( ACDelco #88988585) and use gasket #12581398.

I see that's why i had to splice a new connector on the last one. thanks a lot, You are a wealth of knowledge!

That would be the reason alright. In that case you want the later part but check the wiring as well, I have seen a couple where the wire splices corroded inside the insulation. What problem are you having?

Code P2101.

That's an out of range code, usually from an open circuit. It could also be related to the cam signal issue you were having, as the ground circuit in the PCM is a common buss that they share and if it was lost the TPS would signal out of range.

This is all new to me. so I'm lost. What do you recommend i do? please explain in easy terms, LOL. thanks for all your help though.

Well the first thing is doing testing to verify the powers and grounds for those sensors and for the throttle body. For that a simple multi-meter to verify that there is the 5 volt bias voltage at the sensors and throttle body. I've attached the wiring diagrams, if you right click on them and open in a new tab they come up much larger. The end boxes are the power-train control module connections. The ones that can effect all the sensors and the throttle body are the 5 volt reference feeds and the Low Ref lines (AKA sensor grounds).
Inside the PCM those are interconnected with the 5 volts all being together and the low references all sharing a common ground. As most other items are working that also use those items I would suspect the issue is out in the harness under the hood and not in the PCM itself however a loose ground to the PCM can cause issues as could a bad battery connection as the module then has no real ground reference.
You posted originally that you had a single code, then you removed the cam sensor and suddenly had multiple codes. Did the throttle code pop up at that time or very soon after as well? If yes then it's possible that the cam sensor you moved is the issue. To test that, unplug it, clear the codes and see if the engine will start and run and set only the code for that sensor. If it does and the other codes go away it could be the cam sensor is shorted internally. In that case replacing it should take care of the issues.