Conditions for Running the DTC
WARNING: This page is about a different car, the 2020 Buick Regal and 2019 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
DTC P0442
- DTC P0106, P0107, P0108, P0111, P0112, P0113, P0114, P0116, P0117, P0118, P0125, P012B, P012C, P012D, P0128, P0443, P0446, P0449, P0452, P0453, P0455, P0496, P0502, P0503, P0722, P0723, P2227, P2228, P2229, P2610 = Not set
- Barometric Pressure = Greater than 70 kPa (10.15 PSI)
- ECT Sensor = Greater than 70°C (158°F)
- Ignition/Vehicle - Off
- Fuel level = 10 to 90%
- Start-Up ECT & Start-Up IAT = Within 8°C (14°F) of each other
- Engine Run Time = Greater than 10 min - Before ignition off
- Vehicle Distance Traveled During Drive Cycle = Greater than 8 km (5 mi) - Before ignition off
- Ambient Air Temperature = Between: 0 to 34°C (32 to 93°F)
- Time since diagnostic ran last 17 h = Test Passed or 10 h = Test Failed
Frequency the DTC runs = OncePer drive cyclePer hot soak @ Ignition/Vehicle - Off - DTC test could take 40 min to complete
DTC P0455
- DTC P0068, P00C8, P00C9, P00CA, P0090-P0092, P0106-P0108, P0111-P0114, P0116-P0118, P0122, P0123, P0125, P0128, P0191-P0193, P0222, P0223, P06A3, P06DB, P06DE, P0A1D, P160D, P160E, P1682, P16A0-P16A2, P16F3, P1104, P127A, P127C, P127D, P15F2, P0443, P0449, P0452, P0453, P0502, P0503, P0601, P0604, P0606, P0697, P2100-P2103, P2122, P2123, P2127, P2128, P2135, P2138, P215B, P2176, P228C, P228D, U0073, U0074, U0293, U1817 = Not set
- Ignition Voltage = Greater than 10 V
- Barometric Pressure (kPa) = Greater than 70 kPa (10.15 PSI)
- Fuel level = 10 to 90%
- Q12 Evaporative Emission Purge Solenoid Valve Greater than 1.50%
- Start-Up ECT & Start-Up IAT = Within 8°C (14°F) of each other
- Start-Up ECT = Less than 35°C (95°F)
- Start-Up IAT = Between: 4 to 34°C (39 to 93°F)
Frequency the DTC runs = OncePer cold start-up