C4 AD-BLUE ERROR
Good morning, I have a C4 (chassis VF73ABHZMHJ776699) 1,600 88KW from 2017, it has 3 errors :
87C29E COMMUNICATION FAULT WITH DENOx SYSTEM : ABSENCE OF COMMUNICATION
0020E9 UREA LIQUID PRESSURE: DRIFT TO INCREASE
87C29E COMMUNICATION FAULT WITH THE DENOX SYSTEM: NO COMMUNICATION
I've tried to activate the urea pump but I don't see any spillage. How can I proceed? Thank you Marco
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