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  1. CM (2007-2012) Santa Fe
    Hello all, I really hope you can help me narrow this down. Okay I have a p200a code now. When we bought the car it was definitely messed up and we had to do a lower intake replacement due to the runner being broken. We got that done and even did the gasket and the VCMA or the manifold runner...
  2. RB (2012-2017) Accent
    Would a combo of these codes more accurately identify an oxygen sensor issue than say just the p0420 alone? Had a bunch of issues with fuel economy and loss of power before changing the plugs and sticking to high grade fuel. Wiped the codes I had which were for the fuel level float sender and a...
  3. 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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