AudiARskiguy

I took my AR to get smog the other day and it passed everything but the “OBD system check”.
I just recently got VAG-COM and pulled these codes, can someone tell me if they can be fix or are they a one shot deal and I have to replace then?

The car seems to drive fine, just want to get it to pass smog.


Address 01: Engine Labels: 078-907-551-AZA.lbl
Part No: 4Z7 907 551
Component: 2.7l V6/5VT G01 0002
Coding: 06712
Shop #: WSC 02325
VCID: 55A1C20CAF43E0896D9-5140
WAUYP54B31N094352 AUZ7Z0Y1638092



3 Faults Found:
17956 - Boost Pressure Regulation Valve (N75)
P1548 - 35-10 - Open Circuit - Intermittent
17861 - Exhaust Gas Temp Sensor 1 (G235)
P1453 - 35-00 - Open or Short to Plus
17866 - Exhaust Gas Temp Sensor 2 (G236)
P1458 - 35-10 - Short to Ground - Intermittent
Readiness: 0010 0001

PaperToast

looks like you might be needing some new parts
but lets see what others have to say

MrKid

Check for a leak in the hose to the boost valve, then check out this link for the other codes.

http://www.vaglinks.com/Docs/Audi/C5...GT_Sensors.pdf

I also saw a thread about re-soldering the tab on the EGTS. I can't seem to find it right now. Where the wire comes into the boxes (The red and black ones at the back of the intake) the tab comes loose. This moves around with engine vibration causing intermittent connection.

AudiARskiguy

Does anyone an easy way to get to the sensor on the driver side? I can see from under the car, but from top it looks like I have to take a few more parts off to get to it.

MrKid

Once your Y is off, you will see both modules, red and black. The lead that runs to the drives side runs under your "spider hose" assembly. If you remove that (carefully) you should be able to see the braided wire all the way from the module to the sensor.

AudiARskiguy

if I test the Temp Sensor with meter, what should it read?

MrKid

This link could help, but I really thing you need to clean out all of the silicone and check your solder joints.

http://www.rst-engr.com/rst/articles/egtcht.pdf

AudiARskiguy

Does anyone know of reasonable price place get Exhaust Gas Temp Sensors and Boost Pressure Regulation Valve other than the stealship?

PaperToast

ebay, ecs tuning, europa parts, blau parts, rmeuropean might carry those

thejulex

Readiness: 0010 0001

Ross-Tech: VCDS Tour: Readiness

third bit from the left implies that your o2 sensors are not passing readiness, this is why you failed.