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VW Code 16021

16021 Description And Summary :

When you open internal control module, driver error mechanic will need to check all electrical connections in the camshaft sensor load signal from alternator terminal df, short to ground or control unit programming, programming not finished is the final reason of the code.

16021 Possible Causes:

16021 vw fault code may be caused by one or more of the following:

  • Cylinder 1 Injector Circuit Low
  • Cold Start Injector 1 Malfunction
  • Ambient Air Temperature Sensor Circuit Low
  • Fuel Temperature Sensor B Circuit Range/Performance
  • Clutch Position Sensor Circuit Malfunction
  • Cylinder 4 Contribution/Balance Fault

What To Check After Fixing 16021 Code

  • Inspect all the connections oxygen (lambda) sensor b1 s1, pump current, open circuit
  • 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