P17D700 code

[Shanks]

Hi guys and thanks for any help in advance 

My 2012 a5 3.0 tdi went into the garage for a new steering rack no other issues. Car was returned and after a 20min drive luckily 80ft from home I got a gearbox fault ok to drive but no reverse gear. 
a scan of the codes revealed P17D700 Transmission Fluid pressure sensor/switch B range/performance.
It’s back at the garage who seems to think it’s the mechatronic that has failed?

[Stevey Y]

On 12/4/2022 at 4:10 PM, Shanks said:

Hi guys and thanks for any help in advance 

My 2012 a5 3.0 tdi went into the garage for a new steering rack no other issues. Car was returned and after a 20min drive luckily 80ft from home I got a gearbox fault ok to drive but no reverse gear. 
a scan of the codes revealed P17D700 Transmission Fluid pressure sensor/switch B range/performance.
It’s back at the garage who seems to think it’s the mechatronic that has failed?

Hi if the gearbox has never had a service it is most likely the mechatronic unit that has failed, mind you try changing the oil and filters first as that often brings the box back to life again.

Steve.