P0045 on the 2019 Subaru Ascent
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.
| 11-183-18R | 2019-02-25. Service bulletin. This bulletin announces reprogramming file availability to optimize the ECM. These new files involve the ECM?s diagnosis of DTC P0045: |
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| 11-183-18R | 2018-11-05. Service bulletin. This bulletin announces reprogramming file availability to optimize the ECM. These new files involve the ECM?s diagnosis of DTC P0045: TURBOCHARGER / SUPERCHARGER BOOST CONTROL ?A? CIRCUIT OPEN and DTC P2196: A/F O2 SENSOR SIGNAL BIASED / STUCK RICH BANK 1 SENSOR 1. For P0045, in some cases, an engine RPM drop may occur when selecting D or R range too quickly following ignition on and before the engine reaches full operation during the ECM?s initial control of the waste gate valve. Should this occur P0045 may set the next time the engine is started. For P2196, if the driver "snaps" the throttle open and shut rapidly, normal judgement of the A/F sensor data may be inaccurate and cause the code to be detected in error. |
2 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.