{"version":"1.1.0","producer":"fm.getcarcurious","layer":"official","episode":{"title":"357: Prius Start-Stall... Or No-Start?","url":"http://getcarcurious.com/episodes/357-prius-start-stall-or-no-start","audioUrl":"https://www.buzzsprout.com/809423/episodes/19415214-357-prius-start-stall-or-no-start.mp3","description":"This week on the show I share a case study on a 2015 Toyota Prius that seems to run then stall, however it's actually not running at all. if you are familiar with Toyota hybrid powertrains, you know where this is headed. If not, you'll learn how these operate and what to look for. Either way, listen to find out the cause of the no start!Website- https://autodiagpodcast.com/Facebook Group- https://www.facebook.com/groups/223994012068320/YouTube- https://www.youtube.com/@automotivediagnosticpodcas8832Email- STmobilediag@gmail.comPlease make sure to check out our sponsors!SJ Auto Solutions- https://sjautosolutions.com/Automotive Seminars- https://automotiveseminars.com/L1 Automotive Training- https://www.l1training.com/Autorescue tools- https://autorescuetools.com/   "},"annotations":[{"id":454898,"startTime":102.18,"endTime":112.16,"type":"car","title":"Toyota Prius","url":"/cars/toyota/prius","image":"https://upload.wikimedia.org/wikipedia/commons/9/95/2018-2023_Toyota_Prius.jpg","quote":"...an interesting no start diagnostic on a 15 Toyota Prius. So if you work on Toyota Hybrid stuff, particula...","canonicalId":"car:toyota:prius","priority":0.7,"source":"hybrid-fuzzy+gemini-3.5-flash","data":{"explanation":"The 2015 Toyota Prius represents the final model year of the third-generation hybrid, celebrated for its exceptional fuel efficiency and pioneering hybrid drivetrain. In diagnostic circles, it is a frequent subject of discussion due to its complex integration of a gasoline engine, high-voltage battery pack, and regenerative braking system. Technicians often analyze these vehicles to understand how faults in the hybrid control system can prevent the vehicle from starting.","simplifiedExplanation":"The Toyota Prius is a family hatchback that uses both a regular gasoline engine and an electric motor to help save fuel. It is a hybrid, meaning it automatically manages its two power sources to get the best possible gas mileage. The 2015 version is a highly practical, efficient car designed for everyday commuting.","imageAttribution":"TTTNIS (CC0)","imageLicense":"CC0","imageSourceUrl":"https://commons.wikimedia.org/wiki/File:2018-2023_Toyota_Prius.jpg"}},{"id":454899,"startTime":209.4,"endTime":223.9,"type":"part","title":"motor-generator","url":"/glossary/motor-generator","quote":"and it's just the easy acronym to refer to the gasoline portion of the powertrain versus the motor generator, motor generators that are involved with supplying torque to move the vehicle.","canonicalId":"part:motor-generator","priority":0.6,"confidence":0.95,"source":"gemini-3.5-flash","data":{"explanation":"An electric machine in hybrid and electric vehicles that can act as both a motor (using electricity to spin the wheels or start the engine) and a generator (converting mechanical energy back into electricity to charge the battery).","simplifiedExplanation":"A special electric motor in hybrid cars that can either help drive the car or act as a generator to recharge the battery when you slow down."}},{"id":454900,"startTime":272.7,"endTime":292.8,"type":"car","title":"2015 Toyota Prius C","url":"/cars/toyota/prius-c","image":"https://upload.wikimedia.org/wikipedia/commons/5/5b/DCA_06_2012_Prius_c_4032.JPG","quote":"But this is a 2015 Toyota Prius C. And it is a 1.5 liter engine connected to the electric powertrain. And the actual complaint from the customer is that this would run for 15, 20 seconds, and then shut off.","canonicalId":"car:toyota:prius c","priority":0.9,"confidence":1.0,"source":"gemini-3.5-flash","data":{"explanation":"The Toyota Prius C is a subcompact hybrid hatchback that utilizes Toyota's Hybrid Synergy Drive system. It pairs a 1.5-liter four-cylinder gasoline engine with an electric motor-generator to achieve exceptional fuel efficiency, making it a popular choice for city driving and delivery fleets.","simplifiedExplanation":"A small, highly fuel-efficient hybrid hatchback made by Toyota. It uses both a small gasoline engine and an electric motor to get incredible gas mileage, especially in stop-and-go city traffic.","imageAttribution":"Mariordo (Mario Roberto Durán Ortiz) (CC BY-SA 3.0)","imageLicense":"CC BY-SA 3.0","imageSourceUrl":"https://commons.wikimedia.org/wiki/File:DCA_06_2012_Prius_c_4032.JPG"}},{"id":454901,"startTime":342.3,"endTime":357.8,"type":"term","title":"P3190","url":"/glossary/p3190","quote":"So there's a P3190 that sets in the engine control module. And that just says poor engine power.","canonicalId":"term:p3190","priority":0.7,"confidence":1.0,"source":"gemini-3.5-flash","data":{"explanation":"A Toyota-specific diagnostic trouble code (DTC) indicating 'Poor Engine Power.' It triggers when the engine's actual torque output is significantly lower than what the hybrid control module expects during cranking or running.","simplifiedExplanation":"A computer error code in Toyota cars that means the engine isn't putting out enough power or torque."}},{"id":454902,"startTime":357.8,"endTime":375.7,"type":"term","title":"P0A0F","url":"/glossary/p0a0f","quote":"And then there is a P0A0F, which sets in the hybrid control unit that said engine failed to start. And there's a big one, right? Maybe I don't even need to be talking about this on a podcast to this audience, because it literally tells you in the code that will set every time that the engine failed to start.","canonicalId":"term:p0a0f","priority":0.7,"confidence":1.0,"source":"gemini-3.5-flash","data":{"explanation":"A Toyota hybrid diagnostic trouble code (DTC) that translates to 'Engine Failed to Start.' It is set by the hybrid control computer when the internal combustion engine fails to fire up and run under its own power after being spun by the motor-generator.","simplifiedExplanation":"A computer error code in Toyota hybrids that simply means the gasoline engine failed to start up."}},{"id":454903,"startTime":382.8,"endTime":418.1,"type":"concept","title":"hybrid no-start","url":"/glossary/hybrid-no-start","quote":"is that when you listen to the engine, you look at the RPM of the engine, it appears to be running. And it appears to be running for that 15 to 20 seconds. However long, it's actually cranking. Okay, so this is the actual electric motor spinning over the engine. And the engine is moving so quickly at a cranking speed that you would think that it's running, it sounds like it's running.","canonicalId":"concept:hybrid-no-start","priority":0.8,"confidence":0.95,"source":"gemini-3.5-flash","data":{"explanation":"A diagnostic scenario in hybrid vehicles where the high-voltage electric motor spins the internal combustion engine at a high speed (around 1,000 RPM) to start it. This high cranking speed can easily trick a technician into thinking the engine is actually running when it is not, leading to misdiagnosis.","simplifiedExplanation":"A situation in hybrid cars where the electric motor spins the gas engine so fast and smoothly that it sounds like the car is running, even though the gas engine hasn't actually started up on its own."}},{"id":454904,"startTime":1318.2,"endTime":1332.3,"type":"part","title":"EGR valve","url":"/glossary/egr-valve","quote":"One thing I had kind of skipped over was like an EGR being unplugged, or I'm sorry, an EGR being plugged open could cause something like this. Look at my sensor values and everything looks like it's there.","canonicalId":"part:egr-valve","priority":0.5,"confidence":0.9,"source":"gemini-3.5-flash","data":{"explanation":"Exhaust Gas Recirculation valve. An emissions control device that channels a small portion of exhaust gas back into the engine's combustion chambers to lower combustion temperatures and reduce nitrogen oxide (NOx) emissions.","simplifiedExplanation":"A valve that feeds a little bit of spent exhaust gas back into the engine to help it run cleaner. If it gets stuck open, it can make the engine stall or not start at all."}}],"speakers":[{"id":"s1","name":"Sean Tipping","role":"host"}],"transcripts":[{"url":"http://getcarcurious.com/episodes/357-prius-start-stall-or-no-start/transcript.vtt","type":"text/vtt"}]}