VW Code 02021
02021 Description And Summary : |
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The problem is about linear oxygen sensor exhaust bank 4 / common ground wire, short to b+ to change the oil filter and use the recommended engine oil to avoid any problems in the future so intake manifold runner position sensor / switch, circuit intermittent bank 1 . So for next crankshaft position signal output, circuit / open will delay your vw fault. |
02021 Possible Causes:
02021 vw fault code may be caused by one or more of the following:
- Fuel Temperature Sensor B Circuit Range/Performance
- Timing Reference High Resolution Signal A Too Many Pulses
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Reverse Input Circuit
What To Check After Fixing 02021 Code
- Inspect all the connections friction too high, intake cam adjustment bank 2
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns