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2009 Malibu OBDii codes
03-21-2018, 08:50 PM
Post: #1
2009 Malibu OBDii codes
2009 Malibu 2LT 2.4L, automatic with tap shift, 165k miles, Georgia. I have some codes that came up on my OBDii and have no idea where to start with them. Any help/advice would be greatly appreciated! P0010 twice, P0211 twice, P0414. When I say twice I mean it showed up twice in the same reading. I am about to lose my mind with this car. I have replaced the transmission, ECM, starter, valve cover gasket, and a few other minor things.
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03-21-2018, 10:00 PM
Post: #2
RE: 2009 Malibu OBDii codes
Instead of me trying to type a lot of information, I will just post the links to some good trouble shooting. Something that I noticed is that each one mentions "Wiring Damage." So if I was the mechanic the first thing I would check is ALL of the fuses. If they are all good I would check to see if a harness got up against the exhaust and melted, rubbed through, pinched, corroded at a connector, or got pulled apart from worn motor mounts allowing to much movement. Only after checking that would I move on to the other trouble shooting listed below.
Here is what I found:

P0010: https://www.yourmechanic.com/article/p00...l-lancette

PO211: https://www.yourmechanic.com/article/p02...er-clayton

P0414: https://www.yourmechanic.com/article/p04...e-Johnston

Please let us know what you find or if you need more advice.

Thanks for using the forum,
Garner

Interested in Mining? Look here: Coal Mining, PA
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03-21-2018, 10:23 PM
Post: #3
RE: 2009 Malibu OBDii codes
Just a pointer when working with trouble codes...

Tackle them in the order they show up in your scan tool. There's a reason for the order and sometimes the first one might even be the root cause of another code farther down the list.

If you have easy access to the scan tool (you own it?) then each time you make a fix you can clear the codes to see what comes back. (new info) That way you can figure out if fixing the first code might have cleared up one or more of the others.
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03-21-2018, 10:23 PM
Post: #4
RE: 2009 Malibu OBDii codes
Thank you for the information. I am going to read over it, but in the mean time, do you think these will be expensive problems?
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03-21-2018, 10:41 PM
Post: #5
RE: 2009 Malibu OBDii codes
The term "expensive" is rather subjective. If you can figure it out yourself you may save a small fortune over what a shop might charge. OTOH, a good shop may have some tricks up their sleeve and already know where to look. It's all a matter of what your time is worth and what you are willing to invest... time or money? Sometimes it's a judgement call based on your ability to know when you are in over your head. We'll be glad to help you sort things out if you can follow the suggestions and feed us more info as you go.

BTW, another thing to consider is double checking anything that might have been previously disturbed. Garner suggested a possible harness issue and that may be related to other repairs, or even body repairs. Quite often a harness is not reconnected or routed properly by someone fixing another part of the vehicle. Certainly the first thing on my mind is to get the big picture then narrow it down.
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03-21-2018, 11:26 PM
Post: #6
RE: 2009 Malibu OBDii codes
The main wiring harness could infact be the culprit. As mentioned, I have had electrical problems such as the ECM (which was $700), the starter, and batteries. When touching some of the wiring harness, I do notice how brittle the plastic protector is. It just crumbles when you touch it. So if the protector has failed then that could let heat harm the actual wires maybe? I don't mind going diy on mechanical things but I do know one wrong move on electrical could lead to a domino effect.
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03-21-2018, 11:58 PM
Post: #7
RE: 2009 Malibu OBDii codes
The heat doesn't really damage the wires but eventually the insulation crumbles just like that outer jacket, called "split poly loom". Once the insulation fails THEN you have issues with the conductors touching each other. Perhaps one of your tests will provide a clue or maybe you have to go over the sections and manually inspect everything before replacing the "loom" material, which is readily available. Of course you should keep an eye out for the source of that heat because it does seem a bit premature. I have a fleet of older GM vehicles and only have a few where that loom has crumbled... and some of these trucks are twice the age of yours. In my case I can check records to find an early trany failure or failed cat converter to blame the heat on this problem so speaking from experience here I can say I have only had one harness issue in the 20 years I have been working with this fleet. (one that I didn't catch in time) The loom material and the air space it provides does offer a little extra protection in the long run, despite the fact that it's just plastic.
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