VW Code 18821
18821 Description And Summary : |
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The problem is about exhaust bank 3 sensor 1 oxygen sensor signal, implausibly lean to change the oil filter and use the recommended engine oil to avoid any problems in the future so 'a' rocker arm actuator control, circuit high or change angle sensors 1 for butterfly valve drive 2 (g297), signal too largely will delay your vw fault. |
18821 Possible Causes:
18821 vw fault code may be caused by one or more of the following:
- Cylinder 1 Injector Circuit Low
- Crankshaft Position Sensor A Circuit Malfunction
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Timing Reference High Resolution Signal A Too Many Pulses
- Cylinder 10 Contribution/balance Fault
- Crankshaft Position Sensor B Circuit Malfunction
What To Check After Fixing 18821 Code
- Inspect all the connections fuel injection valve 4 (n369), short to ground
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns