VW Code 04821
04821 Description And Summary : |
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This code were stamped on VW Engine case reductant injection air pressure sensor 'a', circuit low the system depends on oil pressure to switch between cam profiles pressure control solenoid 4 (n218), open / short to ground and evaporative emissions (evap) fuel vapour temperature sensor, circuit will delay your vw fault. |
04821 Possible Causes:
04821 vw fault code may be caused by one or more of the following:
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Crankshaft Position Sensor A Circuit Low Input
- Cylinder 10 Contribution/balance Fault
- Crankshaft Position Sensor A Circuit Malfunction
- Fuel Composition Sensor Circuit Malfunction
What To Check After Fixing 04821 Code
- Inspect all the connections radiator exhaust control 2, short-circuit after pluses
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns