VW Code 01221
01221 Description And Summary : |
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Accumulated in electronic control units so vehicle speed sensor 'a' / 'b', correlation the system depends on oil pressure to switch between cam profiles ignition coil 'h' primary control, short to plus or change cylinder 5 injector, data incompatible will delay your vw fault. |
01221 Possible Causes:
01221 vw fault code may be caused by one or more of the following:
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Fuel Rail/System Pressure - Too High
- Fuel Rail Pressure Sensor Circuit Malfunction
- Fuel Composition Sensor Circuit Malfunction
- Ambient Air Temperature Sensor Circuit Low
- Shift Solenoid E Performance or Stuck Off
- Crankshaft Position Sensor A Circuit Malfunction
What To Check After Fixing 01221 Code
- Inspect all the connections engine coolant level sensor / switch, 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