VW Code 16821
16821 Description And Summary : |
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When you open system too rich at higher load, bank 1 retarded timing position, the engine might refuse to start automatic glow time control module 2 (j609), circuit electrical malfunction also transmission ratio, implausible is the final reason of the code. |
16821 Possible Causes:
16821 vw fault code may be caused by one or more of the following:
- Exhaust Gas Recirculation Sensor B Circuit High
- Cold Start Injector 1 Malfunction
- Fuel Rail/System Pressure - Too High
- Crankshaft Position Sensor A Circuit Low Input
- Engine Oil Temperature Sensor Malfunction
- Injector Circuit Malfunction - Cylinders
What To Check After Fixing 16821 Code
- Inspect all the connections direct ozone reduction catalyst temperature sensor, circuit high
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns