P0299 on the 2020 Bentley Continental
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.
| 2079115/2 | 2026-04-05. Service bulletin. Turbo Charger Under-boost - DTC P029900 is evident in 0001 | V8 Kovomo | All Models. Customer Statement: The engine warning light comes on and the vehicle loses power. |
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| 2079115/1 | 2026-02-04. Service bulletin. Turbo Charger Under-boost - DTC P029900 is evident in 0001 | V8 Kovomo | All Models. Customer Statement: The engine warning light comes on and the vehicle loses power. Workshop Findings: Customer statement can be verified and the following entries may be logged within the engine control unit. • P029900: Turbo/Super Charger Under-boost, passive/sporadic. |
| 2063954.5 | 2023-11-08. Service bulletin. Engine warning light illuminated within the DIP during acceleration - DTC P029900 evident - W12 TSI only Customer Statement: -Engine warning light and max engine speed 4000 rpm warning evident within the DIP during acceleration - Warning on DIP first appears when accelerating (During boost) |
| 2063954.4 | 2023-06-07. Service bulletin. Engine Warning Light Illuminated Within The DIP During Acceleration - DTC P029900 Evident - W12 TSI Only Customer Statement: -Engine warning light and (max engine speed 4000 rpm) warning evident within the DIP during acceleration - Warning on DIP first appears when accelerating (during boost) |
| 2063954/3 | 2021-10-06. Service bulletin. Engine warning light illuminated within the DIP during acceleration - DTC P029900 evident - W12 TSI only Customer statement: Engine warning light and max engine speed 4000 rpm warning evident within the DIP during acceleration - Warning on DIP first appears when accelerating (During boost) Workshop findings: DTC P029900 evident within the engine control unit/s In the event the afore mentioned symptoms are evident the operative should refer to the onward instructions |
| 2063954/1 | 2021-08-06. Service bulletin. Engine warning light illuminated within the DIP during acceleration - DTC P029900 evident - W12 TSI only Customer statement: Engine warning light and max engine speed 4000 rpm warning evident within the DIP during acceleration - Warning on DIP first appears when accelerating (During boost) Workshop findings: DTC P029900 evident within the engine control unit/s Technical background: One of the turbochargers may not be achieving full boost, the issue can be related to a poor connection between the applicable boost pressure valve vacuum solenoid and the signal wire to the applicable Engine Control Module (ECM) leading to a lack of vacuum supplied to the waste- gate when under load In the event the afore mentioned symptoms are evident the operative should refer to the instructions within the Measure section of this TPI in conjunction with Rep.Gr 21 - Boost pressure valve vacuum solenoid (to assist identifying the component location) |
6 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.