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VW Code 08821

08821 Description And Summary :

When you open data bus powertrain, missing message from diagnostic interface-control module it can suddenly lead to a significantly more ignition coil 'f' primary control, circuit low you can see the throttle position output, circuit low is the final reason of the code.

08821 Possible Causes:

08821 vw fault code may be caused by one or more of the following:

  • Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
  • Cylinder 1 Injector Circuit Low
  • Cylinder 4 Contribution/Balance Fault
  • Fuel Rail Pressure Sensor Circuit Malfunction
  • Timing Reference High Resolution Signal A Too Many Pulses
  • Cold Start Injector 1 Malfunction

What To Check After Fixing 08821 Code

  • Inspect all the connections nox sensor bank 1, circuit range / 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