What does code P2BA7 mean?

Q: What does code P2BA7 mean?

NOx Exceedence - Empty Reagent Tank. P2BA7 indicates that the engine control module has detected a nitrogen oxide (NOx) emissions exceedance directly attributable to an empty diesel exhaust fluid (DEF) tank, also called the reagent tank. The computer monitors NOx sensor readings and the reagent level, and when the tank is empty or the fluid level is critically low, it sets this code because the selective catalytic reduction system cannot function without reagent.

DTC codes / P2Bxx · Hybrid propulsion / P2BA7

P2BA7NOx Exceedence - Empty Reagent Tank

P2BA7 indicates that the engine control module has detected a nitrogen oxide (NOx) emissions exceedance directly attributable to an empty diesel exhaust fluid (DEF) tank, also called the reagent tank. The computer monitors NOx sensor readings and the reagent level, and when the tank is empty or the fluid level is critically low, it sets this code because the selective catalytic reduction system cannot function without reagent.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaHybrid propulsion

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.