What does code P2BA6 mean?

Q: What does code P2BA6 mean?

NOx Exceedance - SCR NOx Catalyst Performance. P2BA6 indicates that the selective catalytic reduction (SCR) system has detected nitrogen oxide (NOx) emissions exceeding the calibrated limit, meaning the SCR catalyst is not converting NOx efficiently enough. The engine control module sets this code after comparing the NOx sensor readings before and after the SCR catalyst and finding the reduction efficiency below the expected threshold.

DTC codes / P2Bxx · Hybrid propulsion / P2BA6

P2BA6NOx Exceedance - SCR NOx Catalyst Performance

P2BA6 indicates that the selective catalytic reduction (SCR) system has detected nitrogen oxide (NOx) emissions exceeding the calibrated limit, meaning the SCR catalyst is not converting NOx efficiently enough. The engine control module sets this code after comparing the NOx sensor readings before and after the SCR catalyst and finding the reduction efficiency below the expected threshold.

SystemPowertrain

Code typeGeneric (all makes)

SeverityHigh

Fix difficultyProfessional

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.