Toyota 30822000.cuw Firmware for the 2011 Sienna
Toyota Sienna calibration 30822000 and its connection to a service bulletin about DTC P0116 and the malfunction indicator light.
30822000.cuw is a Toyota calibration associated with engine coolant temperature diagnostics on the 2011 Sienna. Toyota service bulletin T-TCI-3665 lists 30822000 as a previous calibration in a case involving diagnostic trouble code P0116 and the malfunction indicator light.
What the diagnostic issue means
P0116 concerns the engine coolant temperature sensor circuit’s range or performance. The engine control module uses coolant temperature information to manage engine operation, including adjustments made as the engine warms up. When the system detects a temperature signal outside its expected behavior, it can store a fault code and illuminate the malfunction indicator light.
The bulletin identifies 30822000 as the calibration that came before the revision discussed for this issue. Any improvement described by the bulletin belongs to that later revision, not to 30822000 itself. The calibration identifier alone does not establish the cause of a P0116 fault on an individual vehicle.