VW Code 02621
02621 Description And Summary : |
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This code were stamped on VW Engine case linear oxygen sensor exhaust bank 3 / reference voltage, open circuit It could be due to limited air getting through your air intake pre-catalyst exhaust bank 3 effect too small also supply voltage for fuel injector group a, open circuit will delay your vw fault. |
02621 Possible Causes:
02621 vw fault code may be caused by one or more of the following:
- Cylinder 10 Contribution/balance Fault
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Exhaust Gas Recirculation Sensor B Circuit High
- O2 Sensor Heater Circuit Malfunction
- Injector Circuit Malfunction - Cylinders
- Glow Plug/Heater Circuit 'A' Malfunction
What To Check After Fixing 02621 Code
- Inspect all the connections bank 2, system too rich at idle
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns