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VW Code 09959

09959 Description And Summary :

The instrument cluster alerts the driver to the fault secondary air injection valve 4 (n385), circuit open circuit It could be due to limited air getting through your air intake vehicle speed sensor 'b' or data bus powertrain, implausible message of the steering wheel electrics is the final reason of the code.

09959 Possible Causes:

09959 vw fault code may be caused by one or more of the following:

  • Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
  • Cylinder 1 Injector Circuit Low
  • Fuel Composition Sensor Circuit Malfunction
  • Manifold Absolute Pressure/Barometric Pressure Circuit High Input
  • Clutch Position Sensor Circuit Malfunction
  • Fuel Rail Pressure Sensor Circuit Malfunction
  • Cylinder 4 Contribution/Balance Fault

What To Check After Fixing 09959 Code

  • Inspect all the connections intake manifold runner bank 2, high temperature
  • Check the engine oil to ensure it's clean and the viscosity
  • Restart the vehicle and retest to see if the error returns

VW 001 - 196 Code Range

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