DTC codes / P2Bxx · Hybrid propulsion / P2B9B
P2B9B means the engine control module (ECM) has determined that the vehicle's operating conditions are not suitable for a particulate matter (PM) sensor regeneration cycle. The ECM monitors factors such as exhaust temperature, engine load, and vehicle speed, and it will not command a regeneration if these conditions fall outside the calibrated thresholds.
Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
Get the app
Quick access from your home screen.