mk4 throttle body fault codes

Started by -----, January 27, 2009, 07:46:43 PM

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scanned the car tonight when i got home and came back with the following codes

16507 P0123 Throttle Position Sensor A Circuit - High Voltage Input A signal too high

17953/P1545/005445 - Throttle Valve Controller: intermittent

16486 P0102 Mass or Volume Air Flow Circuit - Low input A  intermittent

00670 Throttle Position Sensor -G127 intermittent

cleared them and waitingto see if they come back

had a quick look on the net and came back with the following possibles

Throttle Body dirty
Throttle Body Wiring faulty
Throttle Body faulty

any other ideas out there, i know TB's are not cheap at all












2003 MK4 Jetta VR6 24V 4M S/C - Sold
1999 MK4 Golf GTI Oettinger - Sold

qta4

All those faults can be caused by low battery voltage, or intermittent battery voltage.
Just do an 060 on single measurements, that is adaption of throttle body,do not touch throttle, all could be ok
Skill is, sucessfully tightrope walking across the Niagra Falls.
Intelligence is, having the sense not to do it.

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just upgraded my software to the full version, something i have been meaning to do. will give the TB adaption a go tomorrow
2003 MK4 Jetta VR6 24V 4M S/C - Sold
1999 MK4 Golf GTI Oettinger - Sold

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ok i tried to follow the below taken from ross tech

Procedure for performing a Throttle Body Alignment on DBW Cars using KWP-1281:
(Check to see if the engine speaks KWP-1281 by looking in the top left of the Open Controller Screen Some examples of KWP-1281 engine controllers are 2000+ Golf/GTI/Jetta/New Beetle/Audit TT 1.8T)

Turn the key on but do not start the car.

[Select]
[01 - Engine]
[Measuring Blocks - 08]
Group 060
[Go!]
[Switch to basic settings]
Once you do this you will see the top right display say ADP RUN. The TB adaptation is being done as soon as you switch to basic settings. You will see the values change and hear the TB cycle for the first few seconds then it will stop. Leave it in Basic Settings for about 30 seconds.
[Switch to Meas. Blocks] button and you're all set.

Be sure not to touch the accelerator and make sure the engine is NOT running when you do this!


http://www.ross-tech.com/vag-com/cars/throttlebody.html

dont think this worked as it didnt say ADP run in the top right as stated above. Also no values appearrd in the 4 fields to the right, should there be.




2003 MK4 Jetta VR6 24V 4M S/C - Sold
1999 MK4 Golf GTI Oettinger - Sold

qta4

Well, that is interesting.

I would pursue this further, maybe remove throttle body, then remove side covers and clean with a good grade cleaner lubricant.
There is a motor, or two (being drive by wire) a thick film resistor assy,and maybe you have some poor connections there.

Just give it a go, before resorting to an expensive throtte body change.

My throttle body survived , being 6 months in a river, then cleaning, finally putting in the dishwasher,lubricating and all good.
I am still using the same throttle body today. So they are pretty tough
Skill is, sucessfully tightrope walking across the Niagra Falls.
Intelligence is, having the sense not to do it.

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quick net search and just found this

http://uk-mkivs.net/forums/t/193004.aspx

says use group 98 for an AGU
2003 MK4 Jetta VR6 24V 4M S/C - Sold
1999 MK4 Golf GTI Oettinger - Sold

qta4

Skill is, sucessfully tightrope walking across the Niagra Falls.
Intelligence is, having the sense not to do it.

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Quote from: qta4 on January 28, 2009, 09:57:12 PM
Google is everyones friend ;D

that it is

run group 98 and could hear the the TB humming and clicking away under the bonnet. will see how it goes over the next weekor so

2003 MK4 Jetta VR6 24V 4M S/C - Sold
1999 MK4 Golf GTI Oettinger - Sold

VR6

Go into measuring blocks first. Go to the right group, 098 for some and sometimes group 060 for others. Then switch to basic settings using the lower box. You will see the valves change and the settle. WAIT at least 30 seconds and then close.