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P0300,P0302,P0304,P0306 and a flashing CEL. *UPDATE* new code, old ones fixed

52038 Views 35 Replies 5 Participants Last post by  Ilbdarned, 
6
I got them today, runs like crap and would'nt go over 20mph, it's starting to make me mad :banghead:
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6
A couple pics of the "old" cam position senor. It mistakenly got left in the engine bay and I stumbled on it looking around.

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sailfish
6Sixathome said:
A couple pics of the "old" cam position senor. It mistakenly got left in the engine bay and I stumbled on it looking around.
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:-\ You have got to be joking! They left a part they replaced under the hood? :sosad:
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R
well, at least you know they replaced it...
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sailfish
rbarrios said:
well, at least you know they replaced it...
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:-\ Yea guess that is correct. :sosad:
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6
rbarrios said:
well, at least you know they replaced it...
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True, and I could see the new one down there when I shined a flashlight on it. So, I got the word that the cat conv for bank two is bad, that's what code P0430 is, should have it back tomorrow. I'll bet it got damaged when it misfired and dumped raw fuel into it.
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6
Got her back, they replaced the cat in the front, looks like a real treat to get to if I say so myself.
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J
6Sixathome said:
A couple pics of the "old" cam position senor. It mistakenly got left in the engine bay and I stumbled on it looking around.
Click to expand...
Now that is a quality dealer ;)
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6
I guess it's one of those parts that's small enough it could get left behind if one was focused on getting the new part in.
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R
6Sixathome said:
Got her back, they replaced the cat in the front, looks like a real treat to get to if I say so myself.
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Im pretty sure- most lambda owners have no idea- theres 3 catalytic converters on the Lambdas. (at least on the 2010's and up- DI).
Heres the one Six is referring to-
its right below the area that your oil dipstick is---- between the engine and cooling fans.
this is looking from the bottom of the car- up towards the hood.
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R
where are the other 2? good question-- I have answers.

under the vehicle and between the engine- and the firewall.

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6
My '09 has the same as your '10 but I dont think that the third one is a cat conv because there is no O2 sensors before or after it. I may be wrong though.
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R
yeah- you and I think alike- thats what I thought too when I saw it while looking at the underside. But the muffler and resonator are still further back and this thing is welded like a Cat.
shown below- they list the Converter LEFT (SHOWN as #1), Converter right(not shown in this diagram) and Catalytic converter as #6.
Which shows a hanger- if you look at my image- on the right side of the converter you can see a welded hanger...
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6
OK, I think what they are showing in the pic is the converter for the right and one for the left, or for us the front and back. If you look at your pic of the cat conv thing it does'nt have the hanger on it like in the diagram. This thing must be something else.
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R
in the pic its 'backwards'
look at the tail end of it-- look at the rear tire- and look a little up-- you can see the hanger welded to the bottom portion of the pipe....
I stared at my pics for a while till I saw the hanger-- and also the way one pipe is higher on one side and lower on the other-- it matches the drawing.
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6
Now I see it, so they are missing one cat in the diagram.
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Ilbdarned
6Sixathome said:
I got them today, runs like crap and would'nt go over 20mph, it's starting to make me mad :banghead:
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The random misfire PO300 and the other codes PO302, PO304 and PO306 means you have a common misfire problem in bank 2, cylinders 2 , 4 and 6. Bank 2 is the side of the motor the #2 cylinder is located on.

You have to consider what is common to all 3 cylinders misfiring. One thing is the bank 2 oxygen sensors, sensor 1 and sensor 2, known respectively as short term and long term, and the Catalytic converter in the exhaust system coming from that side of the motors exhaust manifold

It is not likely to be a MAF sensor, because of it being in the main intake for all cylinders, it affects both, bank 1 and bank 2 of the motor.
It is not likely only the spark plugs on one side of the motor are bad .
It is not likely only the fuel injectors on one side of the motor are faulty.
It is not likely only the coils on one side of the motor are bad.

That is why I would eliminate them as being the problem

First thing I would do is replace things in common for that side of the motor, the oxygen sensors, Bank 2, sensor 1 and sensor 2.
Those are the sensors on each side of the catalytic converter immediately located after the bank 2 exhaust manifold.

It is not likely a wiring issue unless it is in a wire that is common to all 3 cylinders. Like if there is a common positive to all 3 coils.

I have experienced these cars going into limp mode where they would barely go 20 or 30mph or shut down showing a traction control light, under some conditions that the computer determines can damage the motor, the computer will shut the car down and then only allow it to move to get it to a garage for repair. Seems crazy, but at least in some cases you won't need a tow.

I could also see a clogged converter creating back pressure and causing a misfire on all cylinders on one side of the motor since the thing in common with all 3 is the exhaust they connect to.
Basically you are looking for one problem that is affecting all cylinders on one side of the motor, It is unlikely for each cylinder to have the same misfire condition on one side of the motor that is independent to each one.
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