catf15h

So I am lucky enough to have just purchased a 2007 z06 with a supercharger on it. Headers, Corsa Exhaust, diablo tuner. The dealership had it at a local performance shop which recalibrated the tuning as it was running rich. These guys SWEAR to me that the lights that come on are because of the performance parts/tuning and NOT malfunctioning. Here is what is happening.

I start the car - only thing that comes on (which this just started happening) is the service tire pressure sensor or whatever. It reads XX for all 4 tires. BUT - the purpose of this question is about the Service Active Handling, Service Traction Control, Service ABS lights that all come on at the same time. This happens if I get up to about 40 MPH or so OR if I accelerate quickly. It is hard NOT to do this in this wonderful machine. So I took it to auto zone to run the codes and something unexpected happened. NO CODES related to the handling/traction/abs OR the tire pressure monitor for that matter. Only code was a typical O2 sensor - which I believe there is a TSB out on this. P1153 - Heated Oxygen Sensor Insufficient Switching Bank 2 Sensor 1 Intermittent. That's it. I don't have any lights related to this. ABS/Traction/Handling lights AND tire pressure sensor.

So my question is - could this be related to the tuning? Any ideas on how I can get this to function? when I first start the car I CAN turn off the traction control with the console button and turn back on. But usually within 30-60 seconds of driving the lights all come on at once (except for tire pressure which is on 100% of the time now - but not really worried about this ATM). The performance shop says to bring it to them so they can look at it for $100/hr. I'm not sure if they just want an easy $100 or if they can actually do anything about this. I would prefer all these lights to not be on and all the systems to which they monitor to work.

2007 z06, 2700 miles. Pro charger, headers, exhaust, diablo tuner, methanol injection.

Thanks for the help.

Zach

catf15h

**UPDATE**

So I read another post where it was suggested the codes reset so don't shut off the engine before reading the codes. The technician said it won't let him read the codes with the engine running so he put it in accessory mode. This read did pull an additional code. It was P0121 throttle position sensor code. I'm going to research this and see what relevance it has.

Thanks again.


**Update**
It appears the TPS is related to the performance modifications and alternate tuning. If someone else disagrees please let me know. So as it stands I still have no idea why my TC/AH/ABS lights come on with no codes.

realcanuk

Does the car have TPMS sensors in the wheels. If not, it is probably causing those lights to come on.

catf15h

Thanks for the response. I haven't confirmed. At the moment i'm worried about the TC/AH/ABS lights. Once I get this figured out i'll then focus on the TPS light.

Anyone else have any ideas on the ABS/TC/AH and the lack of codes related to it? Not sure why lights are coming on the DIC with no codes being thrown. Perhaps something with the tune and what not? I understand they did re-flash the CPU.

ChevyDave

you are correct in that you must have error(s) present when you turn off the car as they will be erased at start if problems are not present. you did that part right.

you will need a TechII code reader to ensure you have all codes and their subcodes. (not sure what tech used for you)

your xxx tire pressures should be taken care of first and......
you need to check tire sizes to see if you are within +/- tire size difference that is required.
Plus i think your pressure and possibly tire size will cause you issues.
the accepted rule of front/rear (not absolute but accepted) diameter differences is..

front must be..
min is rear dia * .942
max is rear dia * .980

back must be..
min is front / .98
max is front / .942


a good calculator for comparing is..
http://www.discounttiredirect.com/di...nfoTireMath.do

The only way to really tell what the heck is the problem is to get code(s) and all subcode(s) with a TechII.

tblu92

OK the "traction control system" has a 2 way function 1st it is used to limit wheel spin to prevent the wheels from spinning on a hard launch-----2nd it is used by the ABS system to prevent the wheels from skidding on a hard stop
The most common issue that triggers an ABS code and TC code is a broken or fouled wheel speed sensor located on each wheel--
Very common--they get fouled with rain and dirt----I would pull all the pigtails apart at each corner--make sure they are clean--and there are NO broken wires---
Also If you car has a rear tire size different than STOCK this can also false trigger both an ABS or TC code---A tuner can correct this---
Just be aware when the ABS light is ON you have NO ABS brakes--so be careful--
Your question is this tune related ?? NO It needs to be fixed as I explained---Unless you have altered your tire sizes from stock then a tuner must correct your rear tire size in your tune------As most things go there is ONE exception---A stock C6 has a split of about 1 inch between the front and rear tire heights--- the rears being 1" taller-- If you have altered this split too much it is not correctable--
As far as the pressure monitor system---If you have aftermarket wheels chances are the tire shop did not transfer the tire monitor sensors to your new wheels--Seems like this is what it is since all 4 are NOT reading---The sensors only last about 5-8 years at best--so it may be they are all dead either way it is an expensive fix to buy all 4 new sensors about $400 PLUS a dismount and mount cost--- On my car when they went dead I just lived with it--It is a PIA--but for $500 I chose to let it ride--

catf15h

Thanks for the responses. I'll have to do some investigation on the sensors and other stuff tonight or this weekend. For your reference the tires I have are the following:

Rear:
Eagle F1 Supercar P325/30ZR/19 94Y
http://www.samsclub.com/sams/goodyea...prod1660022.ip

Front:
Eagle F1 Supercar P275/35ZR/18 87Y
http://www.samsclub.com/sams/goodyea...prod1660020.ip

tblu92

OK so your front are apprx 25.58"
and the rears are apprx 26.68
So your "split is fine -very close to the stock 1" at 1.10 "
I would suspect your wheel speed sensors---

catf15h

So the chevy dealership in the area told me that the O2 sensor bank 1 code that is going off is the cause of the ABS/AH/TC lights coming on. I need to resolve this issue and that will keep the other lights from going off. I don't have the exact code for the O2 sensor. I have it written down somewhere. If anyone has ever heard of this causing ABS/AH/TC lights from coming on i'm all ears.

Thanks for the help.

**Edit**
P1153 is the code for the O2 sensory which is making the ABS/TC/AH lights come on, according to the dealership.

ZZMike

There is no way that an O2 fault code is causing those messages in the DIC.

The most likely causes on your car is either an ECBM fault, a wheel speed sensor fault, or a steering wheel position sensor fault.

erick_e

Believe it or not, it is possible. When I first installed my EForce I was plagued by the ABS/AH/TC messages.

After data logging it turned out that when my fuel trims maxed out, it would trigger active handling messages. I didn't get an actual CEL until the ECU recorded the same trims twice in a drive cycle.

ZZMike

Here are the conditions for setting P1153 per the service manual. The OP says his DIC messages occur only over 40mph or hard acceleration. The observations of the OP do not line up with this code being the cause of his issue.

P1153
DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0128, P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208, P0220, P0222, P0223, P0442, P0443, P0446, P0449, P0455, P0496, P1516, P2101, P2119, P2135, P2176 are not set.

The ECT Sensor parameter is more than 60°C (158°F).
The Engine Speed parameter is between 1,200–3,000 RPM.
The Ignition 1 Signal parameter is between 10–18 volts.
The Engine Run Time parameter is more than 160 seconds.
The Loop Status parameter is Closed.
The TP Indicated Angle parameter is more than 5 percent.
The Fuel Level Sensor parameter is more than 10  percent.
The Barometric (BARO) Pressure parameter is more than 70 kPa.
The MAF Sensor parameter is between 20–55 g/s.
DTC P1153 runs once per drive cycle when the above conditions are met for 2 seconds.

erick_e

Whether or not the OPs issue is caused by the DTC set, it is certainly possible that it is related to the tune. I was having a lean condition code due to my fuel trim maxing out but it would not always set a CEL. However it would always trigger a ABS/AH/TC message. The service manual doesn't tell you that.

Frans96ss

Where are you located?

catf15h

Thanks for the replies. OK, so I have lost competence in the Chevy dealership here. I once again took it back to AutoZone as their scanner is able to get ABS codes. So I now have some codes from the ABS system. I have 2. I am researching them now but thought i'd share. It seems this is more related to my issue than the O2 sensor from previous comments on this thread.

C0040-00 Right Front Wheel Speed Sensor Circuit
C0546-71 System Disabled Information Stored - Invalid Data

**Edit**
Oh - and I'm in East TN.

**Edit 2 **
Initial investigation states I need to investigate the sensor physical for connection/damage. Assuming that looks fine I need to get my volt meter out and test resistance. Specifically I need to test the below. What are your thoughts on these tests. Does this seem accurate/complete?

<i>Test for 850-1350 ohms between the signal terminal A and the low reference signal terminal B. During the test, check for an intermittent circuit condition by gently moving the wheel speed sensor pigtail harness.
If not within the specified range, replace the wheel speed sensor.

Test for infinite resistance between each terminal and the steering knuckle. Reverse the test leads, test for infinite resistance between each terminal and the steering knuckle again.
If less than the specified value, replace the appropriate wheel speed sensor.

Spin the wheel while monitoring the voltage between the signal terminal A and the low reference terminal B. The voltage should be greater than 100 mV AC.
If less than the specified range, replace the wheel speed sensor.</i>

norris_83

If you know of anyone who does have HP Tuners, ask them to log your data and post them here.

The active handling, and service traction control does normally show when you are having a misfire.

If the 02 sensor is stuck lean or rich, then imagine 1/2 your motor is reading as it should and the other half is working 50% if not less. This would definitely lead to a misfire.

The TPS sensor is just that, a TPS sensor. It's controlled by the BCM (body control module) not the ECM. Check your tire pressures and ask the dealership to reset the TPS sensors with their tool.

If your tires are really out of sync, you will get an "Engine Drag Control Active" almost every time you Decel.

Since they used the Diablo to tune your car, send me a PM and I'll take a look at your current tune. Anyone who knows how to tune GM will never use Diablo to tune a supercharged vette!! So I guess it is in your tune.

ZZMike

Please get the wheel speed sensor issue fixed. It should resolve your problem as i stated way back in post 10.

The tests you listed sound like a good starting point to me.