jlbell

Thursday,07,April,2016,08:34:37:20263
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 7 x64
VCDS Version: 15.7.4.1 (x64)
Data version: 20160216
Ross-Tech: Home

Address 01: Engine Labels: 077-910-560-BFM.lbl
Control Module Part Number: 4E0 910 560 A HW: 4E0 907 560
Component and/or Version: 4.2L V8/5V G 0070
Software Coding: 0007773
Work Shop Code: WSC 02313 785 00200
VCID: 1F4DBB7CCEF2FBC667-804A
3 Faults Found:

18282 - Valve for Torque Support Mount
P1874 - 001 - Short to Plus - Intermittent

16706 - Engine Speed Sensor (G28)
P0322 - 004 - No Signal - Intermittent

17800 - Camshaft Position Sensor Bank 2 (G163)
P1392 - 001 - Open Short to Plus - Intermittent

Readiness: 0000 0000


Just wondering where to start. I am going to take off the sensor and swap them and see if the error code moves, per the advice of Ross-Tech. But I am not sure where else to look.

jlbell

I have cleared the codes without them coming back and checked the cam sensors, which appear to be fine. I am leaning towards the G28 sensor.

Jack88

The first one I think is for the engine mount, but I'm not sure which one. You can check to see if one's leaking by looking for runoff from a dark fluid beneath them.

In general, Audi's will spontaneously generate miscellaneous codes. The tolerances are tight, so everyone will seem to get random codes. Wait and see if any come back, but I wouldn't worry much about it until then.

jlbell

I emailed the codes to my independent mechanic and he said that the cam timing is off! If so this would be the 4th time Audi has messed up the timing.

mishar

That's the front right engine support, just close to the alternator. Not all A8's have that control. You may leave with it with no problem.

Engine speed sensor is in the gearbox in the flywheel zone (underneath the car). It can cause difficult warn start and no start at all later.

If camshaft sensor comes back you may swap them or just replace it.

If you emailed only this much to your mechanic he must have crystal ball in order to know that timing is off.

the_duke

18282 - Valve for Torque Support Mount
P1874 - 001 - Short to Plus - Intermittent

This error code only happens on BFM motor cars. There is a TSB that basically says to wire in a resister to trick the ecu. Leaving it as is hurts nothing.

jlbell

Well he knows the problems I have had with Audi in the past, so to be honest I wouldn't even be surprised if it was the timing. I say that because the last time the timing was off it threw the same codes but one extra one, that said something about correlation.

the_duke

The correlation code would indicate a timing error. But without that code I wouldn't think it indicates a timing error.

jlbell

One thing that I have noticed about electrical problems over my time of working on cars, which isn't long, is that short to plus/open short to plus is that they will come back as soon as power is put back to the sensor. I swapped G163 for G40 and I will see if the open short to plus follows it. My father stopped by our independent mechanics to speak to him and found out he is so sure that it is the timing he said he would even back me up if I run into an issue with Audi. Also he mentioned how he had a VW with the same error codes and it turned out to be the timing was off. I trust he knows what he is talking about because he has around 35-40 years of experience with german cars.

jlbell

Hall Sender Driver Side (G163):



Hall Sender Passenger Side (G40):




Notice the white on the black part, looks like wear but isn't. Fooled me until I looked up a picture of a new Bosch, OEM supplier, Hall sender.



If you zoom into the black part you can see the same white spots on a new part. Beyond that I am fairly certain it isn't a sensor issue as it wasn't the last time. I have yet to drive my car, only move it in the driveway, but there still aren't any error codes popping back up. As I said above with my knowledge of short to plus error codes is that they pop back up right after being powered back up or shortly after. Just as with my last timing issue, the error codes popped up I cleared them and they didn't return, but sure enough the timing was off. I have read many of the same stories that say it takes a while for the engine sensors to detect minute timing errors.