A couple of questions........

have you been in contact with the Chevrolet dealer WHEN THE CAR GIVES THE CODES???

This should easily be cleared up by any competent dealer technician.

As I understand it, the C0561 code is essentially, "System Disabled, Information Stored".

The second code, P0172, is "Running Lean".

I may be wrong about this and JoeR is a better code diagnoser than I am.

If the information I provided is correct, the dealer should be able to remedy the situation easily......BUT DO NOT ERASE IT.

 

Yes I have been at the dealer when it was lit up and they erase them but they show up about 3 weeks later.

 

Just caught this....

Regardless of what Snoopy says about being a "better code diagnoser", I just have a list of DTC codes and have done a little research into others problems. DTCs can get real confusing, real fast!! My specialty is just ECM/TCM analysis and tuning with HP Tuners.

The C0561 DTC is a chassis code (the "C") and is VERY confusing when searching. I've found references to this on other models, not the HHR, but there seems to be an underlying theme to solve any other DTCs before worrying about this one, since it may be triggered by others.

The P0172 DTC is a "rich" code, not lean as Snoopy stated (lean is P0171).

With a change in intake, the diameter of the tube near the MAF is critical to the MAF transfer function calibration tables, IOW, how the MAF senses incoming airflow to determine the appropriate fueling. Generally, if the tube is larger than stock, the MAF will sense less air, resulting in less fuel than actual and triggering a lean code from the O2 feedback and fuel trims that result. If the MAF tube diameter is smaller than stock, the MAF will sense more air than normal, add more fuel and trigger a rich DTC.

With your K&N intake, measure the I.D. of the tube at the MAF sensor and compare that to the OEM one. Any difference should give an indication. If so, the only solution is to find someone with the proper tuning tools and knowledge to properly rescale your MAF tables to correct any errors, which would eliminate any resultant DTCs. For someone who knows what they're doing, this is a piece of cake, but, unfortunately, many don't.

 

I have not had my problems resolved yet. I put the intake on months before I began having the problem. I had the car tuned, then a week later was hit right at the right rear wheel. Shortly after, I began having the T/C light come on sometimes after doing a burnout. It progressed until it now comes on sporadically, anytime. I could be sitting at a light, or just cruising when it pops on and the tranny goes into some safe mode where it shifts very rough. Turning off the engine for a few seconds resets it. After setting off the T/C code about 6 or 7 times, I get the picture of the motor idiot light which stays on continuosly until I restart the engine 4 times.

The codes I got were to replace the MAP sensor, as well as O2 sensor codes, from the place that tuned my car as well as 2 Chevy dealers. They refused to cover it under warranty due to my CGS intake, so I finally bit the bullet and changed it myself (I did manage to get the mechanics price for the sensor). And guess what-it did not solve the problem. In fact, when I had a problem with my thermostat last week and checked the car for codes, it had a new MAP sensor code listed. So, either my new MAP went bad or the code is an error.

I plan on bring my car in on Friday for other work, and want them to check the T/C ABS sensor on the right back wheel that was hit. I am hoping that it was damaged in my accident.

 

Well I gave into the pressure I was getting from my dealer and put the OEM system back on and guess what the traction control light came back on .Is it possible that because I installed the K&N that the codes will continue to show codes even after taking it off??I will go back to the dealer and show them that the codes are back even with the K&N off to see what they say,I`LL keep you posted.

 

First off: Happy New Year to All !
Second: I have the AirAid QuickFit Intake system on my 06 HHR LT and I have been plaqued with the check engine light and traction controloblem ever since the install. I, too, am going to contact the people at AirAid to try and find a soultion after I visit my local AutoZone to get the codes read. My problem is that I dont think my car will pass the maryland emissions test with the check engine light on !

 

Hey Lee.......

I would think the T/C light WOULD illuminate after doing a "burnout". Isn't that a low traction condition? Of course this doesn't answer your other T/C light problems.

 

Before the problem began, when I did a burnout I got the message that says something like 'slippery condition' but no traction idiot light. And, when the burnout stopped, the message went off. Now, the traction light stays on until I restart the car. I thought it might have been from my tune, so I took the car back and they put the stock setting into the computer and cleared the codes. Still had the problem, along with the constant 106 MAP sensor code. Like I said, I replaced the MAP and am still getting the code. Either this one went bad also (unlikely) or the code is errant. I have an appointment to bring my car in Monday for the dome light, rotor resurface of replace, check the battery again (car barely cranked this AM) and of course to check the right rear T/C ABS sensor.

 

Well it came down to keeping the intake and the dealer refusing to do service on my car or going back to the original intake .So I took off the K&N and I went back to the OEM,but this is the good part I complained so much to K&N that they are going to give me my money back.They contacted me and told me to bring it back to where I bought and I would be reimbursed.I will keep you posted on how that goes??

 

Has going back to the stock intake solved the problem? I know that my problem did not start when I installed my CGS-it happened much later. I first noticed it sometime after my accident, so I am hoping that is my problem. Still trying to get into my dealer. It is hard because I have to be there by 7 AM to get the car done while I wait, and I take my kids to school at 8, so I cant make it there until about 8:30. My only opportunity is on a day that the kids dont have school.