P0521 on the 2020 Buick Encore GX
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
Nobody has written a description of this code yet.
| A222379711 | 2024-03-14. Service bulletin. Emission Recall. General Motors has decided to conduct a Voluntary Emission Recall involving certain vehicles. The Engine Control Module (ECM) may not clear the permanent status of DTC P0521 (Engine Oil Pressure Sensor Performance). If the ECM had previously set a DTC P0521 and the permanent status is not properly cleared, the vehicle may not pass certain Emissions Inspection/Maintenance (I/M) tests. Dealers are to reprogram the ECM. |
|---|---|
| A222379710 | 2022-12-13. Service bulletin. Service Update. In certain vehicles, if the Engine Control Module (ECM) sets the DTC P0521 (Engine Oil Pressure Sensor Performance), the ECM cannot clear the permanent status of this DTC. If the ECM had previously set a DTC P0521 and the permanent status is not properly cleared, the vehicle may not pass certain Emissions Inspection/Maintenance (I/M) tests. Dealers are to reprogram the ECM. |
| PIP5826B | 2022-01-24. Service bulletin. This Preliminary information communicates to the dealers information related to isolating a potential engine wiring harness issue causing a MIL on with P0521. |
| PIP5826A | 2021-12-13. Service bulletin. This Preliminary information communicates to the dealers information related to isolating a potential engine wiring harness issue causing a MIL on with P0521. |
| PIP5826 | 2021-12-13. Service bulletin. This Preliminary information communicates to the dealers information related to isolating a potential engine wiring harness issue causing a MIL on with P0521. |
5 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.