Audi A6 C7 Timing Chain Tensioner Failure — 2.0 TFSI
Audi
A6
2011
2.0 TFSI CDNB/CDNC
⚡ Quick Summary
Severity Level
High
Safe to Drive?
⚠️ Drive with Caution
Safety Impact
Can become a safety issue if left unresolved
Urgency Level
🟠 Fix Soon
Early 2.0 TFSI engines in C7 A6 (CDNB/CDNC codes) have a timing chain tensioner that fails to maintain chain tension on cold start. A rattle on cold start that disappears after 10-15 seconds is the key symptom. Fault codes P0016/P0017. Complete chain kit replacement costs £600-1,200.
Repair / Solution
No confirmed fixes yet. Share yours below.
⚠️ Wrong Diagnosis?
No commonly reported misdiagnoses for this fault yet. If you have replaced a part that did not fix this Audi A6 2011 problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.
🚗 More About This Vehicle
Explore more Audi models
📖 Related Repair Guides
Help other owners by sharing your experience.
Your real-world fix helps thousands of drivers worldwide. Takes 2 minutes.