P2BAF
NOx System Driver Inducement Active
What it means
P2BAF means NOx System Driver Inducement Active.
Check these first
- An active NOx or SCR fault that has triggered driver inducement
- Diesel exhaust fluid that is empty or of incorrect quality
- A failed NOx sensor reporting an out of range value
- A blocked or failed SCR catalyst
What to do next
- Read all stored NOx, SCR and DEF codes to find the root fault
- Check diesel exhaust fluid level and quality
- Review freeze frame data for the conditions that set the code
- Inspect the NOx sensors and SCR catalyst as directed by the root code
- Repair the underlying fault and clear the code
- Retest after the required drive cycle for the inducement to reset
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Updated
Generic SAE J2012 definition. Last updated 2026-08-30.