P20EEWysoki
Sprawność katalizatora SCR / AdBlue poniżej progu (VAG)
Układ napędowy
Sprawdź szczegóły →P2201
WysokiNOx sensor — circuit out of range (Mercedes)
OBD-II (EN): NOx Sensor Circuit Range/Performance (Bank 1)
Code P2201 — NOx sensor — circuit out of range (Mercedes). Symptoms: adblue warning light. Possible cause: damaged nox sensor. Professional diagnosis recommended.
Symptoms
AdBlue warning light, message "AdBlue see workshop", countdown km to lockout
Possible causes
Damaged NOx sensor, sensor overheating (exhaust leak), connector corrosion, wiring damage
Affected systems
Silnik spalinowyUkład wydechowySCR/AdBlue
Related codes
P2BAFWysoki
Sprawność katalizatora SCR poniżej progu (Mercedes)
Układ napędowy
Sprawdź szczegóły →Code P2201 appears in these brands
Go to messages and symptoms for your brand — there we analyze this code together with other typical alerts.
Suggested Hybspec services
Based on the systems affected by this code, we will most likely start with:
Does code P2201 require professional diagnostics?
The code alone is not enough. To find the cause, you need to read live data, check freeze frame conditions, and compare with vehicle behavior. Book a diagnostic session.