Engine start system fault. please contact workshop!

[shajjad]

my Audi a6 C7 will not start at all I have had the battery changed and also the clutch switch/clutch master cylinder and still it won't start

my fault codes are

U111300 ABS/TCS/ESP CAN SIGNAL SIGNAL FAULTY

U111300 FUNCTION RESTRICTION DUE TO FAULT VALUE RECEIVED 

can anyone please help me

THANK YOU 

 

[Sid2020]

Does your diagnostic machine allow you to see all modules fitted to the car, looks like a Bosch so would think so but want to check. 

are they all present 

does it allow you to run a canbus network check 

[Sid2020]

If your seeing all the usual modules the next thing I would do is as the fault codes look like there in your ABS module I would run live data on all 4 wheel speed sensors. See if all 4 are giving good feedback regarding speed reading. 

[shajjad]

On 1/25/2025 at 3:44 PM, Sid2020 said:

Does your diagnostic machine allow you to see all modules fitted to the car, looks like a Bosch so would think so but want to check. 

are they all present 

does it allow you to run a canbus network check 

hi sid I booked in with Audi main dealer on the report Audi also said it was the clutch switch. Audi also said maybe the wiring wasn't done properly also fault code not deleted 

so I have it booked in with Audi to work on it finger crossed that's the last of my problems 

[Steve Q]

Keep us posted on how you get on 

[Sid2020]

Be interesting to know what they come back with