P0301 on the 2012 Toyota PRIUS
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.
| T-SB-0116-15 Rev | 2017-08-14. Service bulletin. TSB: REVISION NOTICE August 11, 2016 Rev1: Applicability has been updated to include 2016 model year Prius V vehicles. Any previous printed versions of this bulletin should be discarded. Some 2010 - 2015 model year Prius (2ZR-FXE equipped) vehicles, 2012 - 2015 model year Prius PHV vehicles, and 2012 - 2016 Prius V (2ZR-FXE equipped) vehicles may exhibit a "runs rough" and/or MIL "ON" condition with DTC(s) P0300, P0301, P0302, P0303, and P0304 (Misfire) during light acceleration while the Exhaust Gas Recirculation (EGR) system is active. Replace the Intake Manifold assembly to address this condition. |
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| T-TT-0310-14 | 2017-08-01. Service bulletin. Tech Tip: Some customers may experience a Knocking sound and/or Runs Rough on engine start following a cold soak. This may or may not occur with DTC(s) P0300, P0301, P0302, P0303 and / or P0304. |
| T-SB-0116-15 REV | 2016-11-17. Service bulletin. TSB: REVISION NOTICE AUGUST 11, 2016 REV1: APPLICABILITY HAS BEEN UPDATED TO INCLUDE 2016 MODEL YEAR PRIUS V VEHICLES. ANY PREVIOUS PRINTED VERSIONS OF THIS BULLETIN SHOULD BE DISCARDED. SOME 2010 – 2015 MODEL YEAR PRIUS (2ZR-FXE EQUIPPED) VEHICLES, 2012 – 2015 MODEL YEAR PRIUS PHV VEHICLES, AND 2012 – 2016 PRIUS V (2ZR-FXE EQUIPPED) VEHICLES MAY EXHIBIT A “RUNS ROUGH” AND/OR MIL “ON” CONDITION WITH DTC(S) P0300, P0301, P0302, P0303, AND P0304 (MISFIRE) DURING LIGHT ACCELERATION WHILE THE EXHAUST GAS RECIRCULATION (EGR) SYSTEM IS ACTIVE. REPLACE THE INTAKE MANIFOLD ASSEMBLY TO ADDRESS THIS CONDITION. |
3 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.