Hello All,

I need some help 'Please'.

I drive an A4 (2004) sedan 2.0 and the other week I hit an issue.

When I turned the car on the 'P R N D ' lights went all red and began to flash on the dash.


Then we I put the car into 'R' the R light didn't light up and there was no power in the reverse.

The next day everything was fine. It happens once approx 10% of the time I start the car.

I then went to my local garage and he scanned it for me.

The following appeared:

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Engine:

17887 - Brake Boost Vacuum System: Mechanical Failure

Gear Box:

18201 - Trans Output Speed Sensor 2 ( G196) No signal

-> Part 1793 - Output Shaft Speed Sensor Signal Missing Sensor 2


17090 - Tran Range Sensor ( F125) Implausible Signal

-> Part P0706 Inhibitor Switch, Range Signal Out of Range


** We cleared the codes waited for it to re-occur and the same 3 codes appeared on a re-scan **
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My question is:

Which part/sensor should I be purchasing to attempt to fix this issue and what should be the approx price?

My mechanic said his happy to fix however I need to provide him with the correct part and instruction may help.

I called Audi and they said to ignore those codes...they will need to rescan and diagnose themselves $300. Great!!! I'm made of $$$

Any help would be unreal.


Cheers

David