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p0170

  1. 1.8 Liter Turbo
    I have an 2001 Volkswagen Jetta 1.8t and I've been having this code come up for around 3 months. I've had the Mass Air Flow Sensor replaced (with an aftermarket and an OEM one), I've had the engine smoke tested and had the 2 vacuum leaks fixed (not sure where,sorry), I had the pre-catalytic O2...
  2. 1.8 Liter Turbo
    I just pulled a P0170-Fuel Trim Code and I'm not sure what to do: In the past month I've changed the fuel pump relay, MAF, ECT, thermostat and the Pressure Control Line. I don't appear to have any vacuum leaks either. Before I change all of these sensors, the dealership read my fuel richness...
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