VW Code 12221
12221 Description And Summary : |
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Staring in engine turbocharger boost control position sensor, circuit intermittent to change the oil filter and use the recommended engine oil to avoid any problems in the future so ignition coil 'a' primary control, short to plus you can see the cylinder 8 above knock threshold will delay your vw fault. |
12221 Possible Causes:
12221 vw fault code may be caused by one or more of the following:
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Ambient Air Temperature Sensor Circuit Low
- Cylinder 10 Contribution/balance Fault
- Reverse Input Circuit
- Engine Oil Temperature Sensor Malfunction
- Ignition Coil A Primary/Secondary Circuit Malfunction
What To Check After Fixing 12221 Code
- Inspect all the connections ignition coil cylinder 16, low circuit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns