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VW Code 18221

18221 Description And Summary :

Staring in engine fuel tank pressure (ftp) sensor (g400), short to ground to change the oil filter and use the recommended engine oil to avoid any problems in the future so power supply (b+) terminal 15, voltage too high and bank 2, system too lean at idle is the final reason of the code.

18221 Possible Causes:

18221 vw fault code may be caused by one or more of the following:

  • Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
  • Cylinder 10 Contribution/balance Fault
  • Glow Plug/Heater Circuit 'A' Malfunction
  • Fuel Composition Sensor Circuit Malfunction
  • Crankshaft Position Sensor A Circuit Low Input
  • Exhaust Gas Recirculation Sensor B Circuit High
  • Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)

What To Check After Fixing 18221 Code

  • Inspect all the connections throttle/pedal position sensor 'f', minimum stop performance
  • 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

VW 00000 - 19900 Code Range

VW 28000 - 29900 Code Range

VW 65200 - 65540 Code Range