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p0420

  1. RB (2012-2017) Accent
    For some reason my car keeps popping up with a code. Then it'll just shut off later. Torque app will say it's 65% efficiency, then the code disappears with 150% efficiency. Today it popped the P0420 code with 99.66% efficiency. The engine also sounded rough and horrible. This is a 2013 Hyundai...
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