I apologize, I am a complete noob and this will come across as stupidity on my part. I recently changed Air Filter and Cabin Filter by myself and I chose charcoal type filters. It seemed like the car was driving fine. However, all of a sudden triangle of death showed up on the dashboard along with brake system warning. I pulled the car aside, changed orientation of the air filter thinking it might have been the issue. I cleared the codes and started driving. It drove fine for couple of days and then all of a sudden, it flashed red triangle again but no other symbols. I was lucky enough to drive it to a parking lot and looked up the codes and it showed P3190 and P0A0F. I immediately got it towed to the dealer and the dealer deemed it as not able to shift to drive mode. They suggested me to change the 12V battery to get the codes as they are not able to read any codes. I agreed and after changing the 12V battery, car didn't throw any more codes. They did a test drive and I drove it back home now. I am worried that this triangle issue might not have been fixed. I specifically shared this link with the dealer: Toyota Prius P0A0F And P3190 No Throttle Response: SOLVED | Torque News and wanted them to check the MAF sensor. I got no response from them except that there no codes. It is a 2006 Prius with 155000 miles on it. Hybrid battery was changed at 80000 miles. Prior to changing 12V battery today, it was last replaced in 2021 May (just 4 years). What should I do now? Should I continue driving it and hope the red triangle doesn't show up. Thank you so much again for your comments and suggestions.
P3190 just means that for whatever reason, the engine can't make power. P0A0F is further indication of an engine power issue. I received both codes after running my gas tank empty on the first full tank after buying a Prius that had sat for a few years; fuel sender was uncalibrated on the first and showed three bars when the tank was empty. A million things can cause it. When you get close to causing it, poke the system along the lines of the things that can fail: - Bad 12V battery - Bad 12V connection (multimeter showing the voltage potential between - and another point in the chassis - I've seen the body screw on the - side have issues on two of the four cars I've worked on). - Fueling (so, MAF, but also, how's your fuel sender doing?) Don't worry so much. Just keep the tools you need to poke things at hand. I keep a HF 1000A clamp ammeter (which can do DC amps too) and can of starter fluid in my car, and an ELM327-compatible in my pocket.
