P2BAA
NOx Exceedence — Deactivation of EGR
System: EGR/SCR
Severity: medium
What does P2BAA mean?
The DTC P2BAA (NOx Exceedence — Deactivation of EGR) is a fault code stored by the ECU when it detects a NOx exceed condition in the egr/scr subsystem. It is commonly seen on European and Asian vehicles using Bosch, Continental, Siemens or Denso ECUs.
Common causes of P2BAA
- Failed AdBlue dosing
- Old NOx sensor
- EGR fault
How to fix P2BAA
Often resolved by AdBlue+EGR off (where legal).
Tuning approach with DaVinci Deluxe · Cloud Edition
For P2BAA, DaVinci Deluxe · Cloud Edition offers the following ECU map adjustments and software solutions:
- Combined EGR + SCR Off
- NOx monitor disable
Need to fix P2BAA on your ECU?
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