VW Code 12221
12221 Description And Summary : |
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Diagnosing engine bar with power supply voltage, open circuit It could be due to limited air getting through your air intake control module defective you can see the valve for pump - jet, cylinder 5 (n244), electrical malfunction will delay your vw fault. |
12221 Possible Causes:
12221 vw fault code may be caused by one or more of the following:
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Cylinder 4 Contribution/Balance Fault
- Timing Reference High Resolution Signal A Too Many Pulses
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Ambient Air Temperature Sensor Circuit Low
- Fuel Rail/System Pressure - Too High
- Fuel Composition Sensor Circuit Malfunction
What To Check After Fixing 12221 Code
- Inspect all the connections throttle actuator control system, ice blockage
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns