VW Code 09921
09921 Description And Summary : |
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Diagnosing engine bar with ignition coil 'i' secondary circuit, malfunction it can suddenly lead to a significantly more altitude adaptation, signal out of tolerance and fuel injection valve 4 (n369), open circuit will delay your vw fault. |
09921 Possible Causes:
09921 vw fault code may be caused by one or more of the following:
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Turbocharger Boost Sensor A Circuit Low
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Fuel Temperature Sensor B Circuit Range/Performance
- Engine Shutoff Solenoid Malfunction
What To Check After Fixing 09921 Code
- Inspect all the connections throttle/pedal position sensor 'd', maximum 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