Conditions for Running the DTC

WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.

P24B9 - Condition 1:

DTCs P043E, P043F, P06E4, P0111, P0112, P0113, P0114, P0116, P0117, P0118, P0119, P0128, P111E, P0451, P0461, P0462, P0463, P043E, P043F, P145C, P145D, P1462, P1463, P0502, P0503, P0722, P0723, P2066, P2067, P2068, P2227, P2228, P2229, P2230, P2400, P2401, P2402, P2418, P2419, P2420, P24BA, P24BB, P24B9. P2537, P262B, U0140, U182D, U0073, U0074, is not set
The barometric pressure (BARO) is between than 70 - 110 kPa (10 - 16 PSI).
The fuel level is between 10 - 90%.
The propulsion system is not active.
The engine coolant temperature (ECT) is less than 40°C (104°F).
The intake air temperature (IAT) is between 4 - 45°C (39 - 113°F).
The system voltage is greater than 10 V.
Vehicle speed is less than 4.8 km/h (3 MPH).
The vehicle is OFF.
No refueling request is detected.
A service bay test is not active.
Device control less than 0.5 s
There are three possible time windows for this test to run. Up to that point and through this time period the propulsion system must not be active. These time windows are: 5.0, 7.0 or 9.5 h.

P24B9 - Condition 2:

DTCs P0068, P00C8, P00C9, P00CA, P0090, P0091, P0092, P0071, P0072, P0073, P0106, P0107, P0108, P0122, P0123, P0191, P0192, P0193, P0222, P0223, P0443, P0458, P0459, P0502, P0503, P0601, P0604, P0606, P0697, P06A3, P06DB, P06D2, P06DE, P0A1D, P0722, P0723, P16F3, P1104, P127A, P127C, P127D, P145D, P15F2, P160D, P160E, P1682, P16A0, P16A1, P16A2, P16A7, P16F3, P2100, P2101, P2102, P2103, P2122, P2123, P2127, P2128, P2135, P2138, P215B, P2176, P2227, P2228, P2229, P2230, P228C, P228D, P2400, P2401, P2402, P2418, P2419, P2420, P2450, P24BA, P24BB, U0073, U0074, U0293, U1817 is not set.
The barometric pressure (BARO) is between 70 - 110 kPa (10 - 16 PSI).
The outside air temperature is greater than 4°C (39°F).
The propulsion system is active and the engine is running.
Vehicle speed is greater than 30.5 km/h (19 MPH).
The system voltage is greater than 11 V.
The purge is not enabled.
Device control less than 0.5 s.
The fuel tank pressure sensor restriction diagnostic P1464 is not running.
The EVAP system no purge flow diagnostic P0497 is not running.
The EVAP Vent System Performance diagnostic P0446 is not running

P24BA and P24BB

Runs any time the engine control module (ECM) is awake and the propulsion system is active or not active.