VW Passat B8 AdBlue System NOx Sensor Failure
Volkswagen
Passat
2015
2.0 TDI EA288 Euro 6
⚡ Quick Summary
Severity Level
Medium
Safe to Drive?
⚠️ Drive with Caution
Safety Impact
Indirect risk — worth monitoring, not urgent
Urgency Level
🟡 Monitor Closely
The upstream or downstream NOx sensor on B8 Passat Euro 6 diesel fails, causing AdBlue system warning lights and ultimately an engine start countdown. Fault codes P2201/P2202. Sensor replacement costs £200-450. Always confirm which sensor has failed before ordering.
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 Volkswagen Passat 2015 problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.
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