possum67

Not sure if this applies to any other than 2.2 but here it is.

Had problems with CEL and Reduced Eng Power for last week or so. With a lot of searching and reading on this forum, I found the problem. The car continuously would set a P2165 code to do with Throttle Body Sensor. After cleaning TB carbon biuld up, checking the terminal ends, checking to make sure everything was plugged well, I found shorted wiring!

I read in a TSB about the wiring harness possibly contacting/rubbing on a bracket and possibly causing a ground which would disable the TB and set the code. Last night I found the ground and hopefully took care of the problem.

If you have had this problem, check the area in the pics BEFORE you let the stealership or another mech say you need a new TB or TB motor.



Here is what it looked like after getting it exposed...thought the pics looked better when I took them last night...



If anybody needs better explanation feel free to email me...hope this helps somebody!

ChevyMgr

There is no code P2165. Maybe it was a P2135? For those that want information on codes a good place to start is here:

https://www.chevyhhr.net/forums/problems-service-repairs-42/official-tsb-recall-thread-23231/

This link is in the Problems/Service Issues Forum as a sticky.

After accessing the Thread use the "Search This Thread" option and type in the trouble code or anything else you are searching for. This will bring up the TSBs that may help.

When I typed in P2135 I got this:
https://www.chevyhhr.net/forums/show...135#post345310

and this:

https://www.chevyhhr.net/forums/show...135#post329158

You can also find a list of all Trouble Codes at this link:

https://www.chevyhhr.net/forums/problems-service-repairs-42/list-diagnostic-trouble-codes-2008-2010-hhr-14259/

possum67

Must have fat fingered...I wrote down P2135...typed P2165

rt2008

Having the same issue, checking the affected area now, ill let you know what I find and post pics....

possum67

rt2008....if you look at the picture above with the light in it you will see where the wire "t's" off the large harness, just above that you can see where I had already untaped the wiring harness. The harness was resting/rubbing on a part in that area. It had rubbed through the wire loom and wire's insulation causing it to ground out. Hopefully yours is that simple too! I just taped the wire up real well, taped the whole bundle with friction tape, reinstalled the wire loom as well as adding another layer of thicked, more heavy duty loom. HOPE THAT HELPS.

rt2008

I undid the wiring bundle covering in the same area, and farther down, nothing really stood out to me...i dropped it off at the mechanic this morning. Hoping they can find something out in the daylight better than I could last night. The dealership told me it would be 3 days to see the car and it was 130 an hour for troubleshooting of the issue, so ill take my chances with my mechanic since im not under the warrenty anymore.

possum67

Let us know what he finds...