Hi I am really hoping some one can give me some pointers as im a truly stuck.
Have an Audi Q5 2019 model FY and it came up with an ad blue warning 500 miles to non start.
ran a scan and lots of fault codes came up
Engine, rear view camera, CAN faults SRC reduction unable to communicate. i've put a copy of the scan below.
it lists all sorts of faults, the camera comes back if i disconnect the SRC module.
it lists that the GSM antenna 2 is open circuit.
I did find that the rear windscreen washer pipe was split at the rear windscreen motor so was pumping water all over the boot. I thought this was the issue and have made the pipe safe but the faults are still there.
I am leaning towards a fault on the CAN system wiring fault but for the life of me don't know where to start. any suggestions would be gratefully received as at the moment the car engine management light keeps coming on and the ad blue warning keeps coming up.
The CAN faults come up as
2 Faults Found:
66565 - Extended CAN Bus (SAE Bus C)
U0046 00 [00001000] - Malfunction
[CAN_Extended_Bus_Defect]
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Priority: 4
Fault Frequency: 5
Reset counter: 225
Mileage: 87434 km
Date: 2025.01.21
Time: 20:38:16
65797 - Extended CAN in One-Wire Mode
U0054 00 [00001001] - -
[CAN_Extended_Single_Wire_Error]
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Priority: 4
Fault Frequency: 4
Reset counter: 185
Mileage: 87434 km
Date: 2025.01.21
Time: 20:38:20
Voltage_Extended_CAN-Voltage_CAN_High: 3.28 V
Voltage_Extended_CAN-Voltage_CAN_Low: 3.32 V
Any suggestions where to start
Only other mechanical fault that I know with the car is the coolant is dropping and it has been pressure checked and is all ok. The mechanic says that there must be a leak in the Valley part on the engine which is quite labour intensive to fix not sure if this would effect the fault with the CAN lines
Please help
Have an Audi Q5 2019 model FY and it came up with an ad blue warning 500 miles to non start.
ran a scan and lots of fault codes came up
Engine, rear view camera, CAN faults SRC reduction unable to communicate. i've put a copy of the scan below.
it lists all sorts of faults, the camera comes back if i disconnect the SRC module.
it lists that the GSM antenna 2 is open circuit.
I did find that the rear windscreen washer pipe was split at the rear windscreen motor so was pumping water all over the boot. I thought this was the issue and have made the pipe safe but the faults are still there.
I am leaning towards a fault on the CAN system wiring fault but for the life of me don't know where to start. any suggestions would be gratefully received as at the moment the car engine management light keeps coming on and the ad blue warning keeps coming up.
The CAN faults come up as
2 Faults Found:
66565 - Extended CAN Bus (SAE Bus C)
U0046 00 [00001000] - Malfunction
[CAN_Extended_Bus_Defect]
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Priority: 4
Fault Frequency: 5
Reset counter: 225
Mileage: 87434 km
Date: 2025.01.21
Time: 20:38:16
65797 - Extended CAN in One-Wire Mode
U0054 00 [00001001] - -
[CAN_Extended_Single_Wire_Error]
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Priority: 4
Fault Frequency: 4
Reset counter: 185
Mileage: 87434 km
Date: 2025.01.21
Time: 20:38:20
Voltage_Extended_CAN-Voltage_CAN_High: 3.28 V
Voltage_Extended_CAN-Voltage_CAN_Low: 3.32 V
Any suggestions where to start
Only other mechanical fault that I know with the car is the coolant is dropping and it has been pressure checked and is all ok. The mechanic says that there must be a leak in the Valley part on the engine which is quite labour intensive to fix not sure if this would effect the fault with the CAN lines
Please help
