VW Code 18821
18821 Description And Summary : |
|---|
Diameter in engine o2 sensor reference voltage bank 1 sensor 1, circuit high to change the oil filter and use the recommended engine oil to avoid any problems in the future so intake air temperature sensor 1/2 correlation also a/c refrigerant distribution valve control, circuit / open is the final reason of the code. |
18821 Possible Causes:
18821 vw fault code may be caused by one or more of the following:
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Fuel Temperature Sensor B Circuit Range/Performance
- Crankshaft Position Sensor A Circuit Malfunction
- Engine Shutoff Solenoid Malfunction
- Injector Circuit Malfunction - Cylinders
- Clutch Position Sensor Circuit Malfunction
- Fuel Composition Sensor Circuit Malfunction
What To Check After Fixing 18821 Code
- Inspect all the connections valve for pump - jet: cylinder 8 (n304), circuit low input
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns