Code result
P2BAD
NOx Exceedence - Insufficient Reagent Consumption
High severity
What it means
The aftertreatment system detects elevated NOx emissions while reagent (AdBlue/DEF) consumption is below the expected level. Causes include clogged dosing injector, incorrect dosing rate or tampering.
Is it safe to drive?
No — stop driving
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly.
Most likely causes
Clogged DEF dosing valve
highOne of the most commonly reported causes for this code — check this first.
Incorrect dosing calibration
mediumA plausible cause — test and verify before replacing parts.
Related help
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