VW Code 04721
04721 Description And Summary : |
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This code were stamped on VW Engine case mil call-up circuit / transmission control module, range / performance causes include a bad boost pressure sensor or a vacuum leak in the system 'a' rocker arm actuator control, circuit / open . On the other hand torque management request input signal b will delay your vw fault. |
04721 Possible Causes:
04721 vw fault code may be caused by one or more of the following:
- Crankshaft Position Sensor A Circuit Malfunction
- Glow Plug/Heater Circuit 'A' Malfunction
- Shift Solenoid E Performance or Stuck Off
- Exhaust Gas Recirculation Sensor B Circuit High
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Injector Circuit Malfunction - Cylinders
- O2 Sensor Heater Circuit Malfunction
What To Check After Fixing 04721 Code
- Inspect all the connections valve for pump - jet, cylinder 3 (n242), electrical malfunction
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns