p0446 tbp canister vsv evap

  1. Felix1414
    Thread

    P0446 after Right-Rear Collision & Refuel - Gen 2 Prius (2004) - Rough Idle/Start Body:

    Hi everyone, I'm looking for technical advice on a persistent P0446 code on my 2004 Toyota Prius (Gen 2). The history of this fault is quite...
    Thread by: Felix1414, Mar 27, 2026, 4 replies, in forum: Gen 2 Prius Main Forum
  2. fragglestickcar
    Thread

    P0446 and Techstream "TBP" Fail

    Can't shake a P0446 for several months now. Techstream Engine and ECT Live shows a single failed test labelled "TBP". I believe this stands for...
    Thread by: fragglestickcar, Apr 4, 2018, 19 replies, in forum: Gen 2 Prius Care, Maintenance and Troubleshooting
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