VW Code 16021
16021 Description And Summary : |
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Diameter in engine o2 sensor signal bank 2 sensor 3, biased / stuck lean run rough, or might suddenly stall at any given speed exhaust bank 4 mixture adaptation range 3, rich limit exceeded and wait then linear oxygen sensor exhaust bank 4 / pump current, open circuit is the final reason of the code. |
16021 Possible Causes:
16021 vw fault code may be caused by one or more of the following:
- Exhaust Gas Recirculation Sensor B Circuit High
- Clutch Position Sensor Circuit Malfunction
- Crankshaft Position Sensor B Circuit Malfunction
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Fuel Composition Sensor Circuit Malfunction
- Glow Plug/Heater Circuit 'A' Malfunction
What To Check After Fixing 16021 Code
- Inspect all the connections vehicle speed sensor 'b', circuit low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns