P048C00 - Exhaust Pressure Control Valve Pos. Sensor/Switch Location

[drinfinity]

I have a P048C00 fault (4motion T6.1 Highline) and engine light is on. I’m going to book it in at Trafford VW, but before I do can anyone point me to where the Exhaust Pressure Control Valve Pos. Sensor/Switch is? I want to check I haven’t disturbed it with when I installed:
A) 240V hookup in front of battery
B) Water filler pipe from front of engine bay, down side of engine (driver’s side), above axle, and back past driver’s step.

OBDeleven vehicle history log
Date: 2023-07-09 17:46:12

VIN: WV1XXXXXXX
Car: CandyVan
Year:
Body type: UNKNOWN
Engine: DNAA kW ( hp) l
Mileage: 7709 km

---------------------------------------------------------------
01 Engine
System description: R4 2.0l TDI
Software number: 05L906023C
Software version: 1482
Hardware number: 05L907309F
Hardware version: H80

Faults:
P048C00 - Exhaust Pressure Control Valve Pos. Sensor/Switch
Circuit Range/Performance
static
Priority - 2
Malfunction frequency counter - 1
Unlearning counter - 40
km-Mileage - 7654 km
Engine speed - 0.00 1/min
Normed load value - 0.0 %
Vehicle speed - 0 km/h
Coolant temperature - 82 °C
Intake air temperature - 29 °C
Ambient air pressure - 990 mbar
Voltage terminal 30 - 12.220 V
Dynamic environmental data - 209628449A127F44A9000044A61F9444AAFDFE43C80000008F44A81280
date - 2023-07-08 11:34:49

 

[mmi]

I would look the area in front of middle (big) silencer.

 

[drinfinity]

Thanks. Booked in for Vw to have a look, first appointment was end of August, so hopefully nothing bad happens before then.

 

[drinfinity]

Still get the error, but only when starting from cold will the warning light appear. After a run, when it starts again the warning light usually goes out.

 

[drinfinity]

Resolved! It went in for service today and software update, which was apparently associated to this fault.

 

[drinfinity]

Specifically: 23ER W-Engine control unit software update