Powertrain
Definition only
Lights the check engine lamp
P2EAD: Reductant Metering Unit 2 Performance
Standardized SAE J2012 code · P2Exx codes
What does P2EAD mean?
The reductant metering unit 2 does not deliver the expected DEF/AdBlue dosing within the calibrated profile. Pump aging or pressure regulator drift.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Symptoms
- Check engine light or NOx warning on
- AdBlue/DEF level or quality warning
- Possible no-start countdown after ignore period
- Failed emissions inspection (NOx)
Common causes
- High Pump output degraded
- Medium Pressure regulator drifted
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P2EAD on the same make and model first.
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