Trouble codes and warning lights, decoded.
What P0A80, P0AA6 and the rest mean, and what they usually turn out to be in our bays.
Oct 2026Prius ABS Pump Running All the Time? What’s Leaking in Your Gen 2 or Gen 3Prius ABS pump buzzing nonstop, with brake lights on? A small internal leak drains the pressure it stores. What fails on a Gen 2 vs a Gen 3, from our shop.P0420Prius P0420 Code: Is It Really the Catalytic Converter?Prius P0420 code? Your Prius grades its catalytic converter with two sensors. How the test works, what Toyota says to check, and what DEQ needs.P1121Prius P1121 Code: The Thermos Bottle in Your Gen 2 and the Valve That Runs ItPrius P1121 code on a Gen 2? It points at the valve that runs the coolant heat storage tank. How the system works, and what we’ve found on real cars.C1241Toyota C1241 Code: What It Shows Up Alongside on the Prius and HighlanderToyota C1241 code on a Prius or Highlander? It rarely shows up alone. What we see it paired with across 241 repair orders, and what we did.P0AA6High-Voltage Isolation Faults Explained: Why the Brand Decides the BillA woman called us about a Gen-1 Chevy Volt she’d bought used, cheap. It threw a high-voltage isolation fault. The dealer kept the car for months, “tore into it,” and quoted a replacement battery: a hefty diagnosis bill just to get thatSep 2026The Prius “Triangle of Death” With No Other Warning Lights (2004-2009): Check Your OilOn a 2004-2009 Prius, a red triangle with no other lights that flickers when you slow or turn often means critically low engine oil. Here's what to do.P0A80P0AA6P0A0FToyota Hybrid & EV Trouble Codes: Every Code We’ve CoveredEvery Toyota hybrid and EV trouble code we've covered at our Portland shop - P0A80, P0AA6, P0A0F, P148F00, EVAP codes and more - with links to each guide.P0A80Toyota Camry Hybrid P0A80 Code ExplainedP0A80 on your 2007-2011 Toyota Camry Hybrid means the hybrid battery needs replacing. Here's what the code really tells us, how we confirm it, and your options - from Portland's hybrid specialists.P148F00Toyota Prius P148F00 Code ExplainedPrius P148F00 means the engine coolant pump is over-revving - usually low coolant from a failing water pump or head gasket. Here's how to tell which.P0AA6Prius P0AA6 Code Explained: Why It’s Often Not the BatteryPrius P0AA6 is a high-voltage isolation fault, but on a Prius the leak is often the transaxle, A/C compressor, or water intrusion, not the battery.P0441P0455Toyota P0441 & P0455 EVAP Codes ExplainedP0441 and P0455 on a Toyota? What these EVAP codes mean, why it's usually the gas cap, and when it's something more serious - from Portland's Toyota specialists.P261CPrius water pump code wouldn’t clear: the other shop replaced the part but missed the wirePrius P261C code will not clear? Atomic Auto walks through the diagnosis and why the electric water pump may not be the real problem.
Written in the shop from real repair orders, with names removed. Fault codes are what the car reported, not a diagnosis on their own.
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610 NE 102nd Ave, Portland, OR 97220102nd and Glisan, a block from the Gateway Transit Center and all three MAX lines.Directions
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