powertrain error sending me to the nuthouse

[taxi]

Hi, If anyone can help me out it will be appriciated I am rebuilding a 05 Vz executive and i have nearly completed it exept I keep gettin 02 sensor error (heater curcuit malfunction) I have changed both 02 sensors with new genuine gm sensors, but when you reset the error and turn the iginiton of and on once the powertrain error reappears, This is driving me crazy as it is the only error the car is giving and i can not pass the required roadworthy because of this error, Help Plz any ideas will be tryed

[delcowizzid]

get the code reset at holden should do it

[andyman]

is the plug at the back of the motor, from the engine harness to the transmission harness plugged in?

[taxi]

yes it is plugged in I have also been to my commodore service centre and spent 800 dollars for them to tell me nothing, they cant even find the problem. Is there a way to disconect the system warning so that I can pass it over roadworthy?

[taxi]

Holden are useless they told me the key couldn't be recoded because I changed the BCM, and I have recoded it myself. I have access to the same program that Holden use.

[Auke Fischer]

Don't know if its of any use, but I am getting the "Check Power Train" message and this seems to be caused by a faulty coil-on-plug. Which also sends the LPG computer in a frezy so now I can only use petrol untill I replace the Coil-on-Plug (on back order) $440 each !! (Recommende to relace all + $2600 !!) Have also heard that the CO2 sensor can cause the powertrain aswell. Hope this helps !!
What program are you using??

[taxi]

Dont know what program it is but because I have so many cars I have access to my mechanics workshop I just walk in and help myself. I can tell you that its a large hand held unit and its red because theyve updated there systems.

[Auke Fischer]

Apparently hard to find in Australia but repairer managed to find four Coil-on-plugs @ $175 each.
Problem solved.!!

[taxi]

Thanks for your help. Ive got a holden expert looking at it on monday they may think the ecu that i put in the car is for the later model vz which requires 4 o2 sensors well c how it goes there gonna change the engine module and the bcm again. cross my fingers and hope for the best. (atleast my wrecker isnt going to charge me for this)

[Phreddy]

That might be it.... I know the 190KW Alloytec has a four sensor setup.... I think the later versions of the 175KW did as well....

(that's not from anywhere official though, it's just that I experienced the problem in my son's SV6 after the rear left O2 sensor wire got torn off by road debris... His car sits bloody low.... )

All the best with it anyhow...

Oh, by the way - if these supposed "experts" at Holden knew how to drive their Tech 2 properly, they would be able to look back over historical DTCs to find out where the fault is being triggered from... That's how we found the trouble with Matt's car - the diagnostic told us the code was triggered by the "left post-cat sensor" or something.... When we had a look, the wire had been torn out of the harness. Don't take everything that these bozos say as gospel - I've had a few situations where they have out-and-out LIED to customers of mine....

[taxi]

dont I know it the guys at holden couldnt tell you red from yellow, and then they get upset when they find out I know what im talking about. ( I have a vx commie 2 vy commies and a vz <- the one i have nearly finnished rebuiding and im in the market for 2 VE commies) but being a chick they think that they can spill there B******T and Im going to accept there reasoning. Like when they told me it was going to take 6 hrs to do a airbag analasis, The guy at holden didnt appreciate me calling him a dick and argued with me when i told him it takes 5 minutes did he want me to show him how it is done lol....

[CalaisJohn]

yes it is plugged in I have also been to my commodore service centre and spent 800 dollars for them to tell me nothing, they cant even find the problem. Is there a way to disconect the system warning so that I can pass it over roadworthy?

I'd could have told you that for much less lol.. sorry

[Exidor]

dont I know it the guys at holden couldnt tell you red from yellow, and then they get upset when they find out I know what im talking about. ( I have a vx commie 2 vy commies and a vz <- the one i have nearly finnished rebuiding and im in the market for 2 VE commies) but being a chick they think that they can spill there B******T and Im going to accept there reasoning. Like when they told me it was going to take 6 hrs to do a airbag analasis, The guy at holden didnt appreciate me calling him a dick and argued with me when i told him it takes 5 minutes did he want me to show him how it is done lol....

Why is it when women are treated like an idiot
it's a gender issue?
Believe it or not, men also lie to other men.
Bullshit is not exclusive to either sex.

[bigdaddycool]

get holden to disable the dtc's that are causing your problem. If you really do have a later ecu with 4 o2 sensors programmed in there is no fix other then to adjust the ecu software to disable checking of the missing o2's............ this problem would take all of 2 seconds to fix with VCM Suite.

[andyman]

does it get any errors for the cam postion sensors? reason being is the o6 onwards alloytecs were fitted with digital sensors rather than the previous models pick up sensors

[taxi]

no other errors exept for the 02 heater circuit sensor error, I will go to the workshop tommorrow and try to disable the 02 sensors, Its just frustrating when you have changed everything over and you still get the warning. There are no errors from the cam sensors, all sensors wiring have been checked over with a fine tooth comb. If I cant fix it tommorrow on monday my wrecker can have it for the day see what he can do. Anyways have to cruise for now have to pick up engine for my vy thanks to the driver for F*****King the engine! Any other ideas guys let me know I will try them

[Vzniko]

Apparently hard to find in Australia but repairer managed to find four Coil-on-plugs @ $175 each.
Problem solved.!!

Repco has the coil plugs for the VZ (not genuine) for around $60 each. I saved a lot of money doing it myself.
Issue still there thought, but that is a different story all together